- Types:
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horn
one of the bony outgrowths on the heads of certain ungulates
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horn
any hard protuberance from the head of an organism that is similar to or suggestive of a horn
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crest
a showy growth of e.g. feathers or skin on the head of a bird or other animal
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pseudopod, pseudopodium
temporary outgrowth used by some microorganisms as an organ of feeding or locomotion
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flagellum
a lash-like appendage used for locomotion (e.g., in sperm cells and some bacteria and protozoa)
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hair
a filamentous projection or process on an organism
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cirrus
a slender flexible animal appendage as on barnacles or crinoids or many insects; often tactile
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spine
a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin
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aculea
small spiny outgrowth on the wings of certain insects
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style
a slender bristlelike or tubular process
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villus
a minute hairlike projection on mucous membrane
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tail
the posterior part of the body of a vertebrate especially when elongated and extending beyond the trunk or main part of the body
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fetlock
projection behind and above a horse's hoof
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tentacle
any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals; used for feeling or grasping or locomotion
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arista
bristlelike process near the tip of the antenna of certain flies
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acromial process, acromion
the outermost point of the spine of the shoulder blade
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ala
a flat wing-shaped process or winglike part of an organism
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alveolar arch
the part of the upper or lower jawbones in which the teeth are set
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alveolar process, alveolar ridge, gum ridge
a ridge that forms the borders of the upper and lower jaws and contains the sockets of the teeth
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acrosome
a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
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caruncle, caruncula
an outgrowth on a plant or animal such as a fowl's wattle or a protuberance near the hilum of certain seeds
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condyle
a round bump on a bone where it forms a joint with another bone
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coronoid process, processus coronoideus
a sharp triangular process projecting from a bone
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epicondyle
a projection on a bone above a condyle serving for the attachment of muscles and ligaments
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fimbria
thin projections forming a fringe (especially around the ovarian end of the Fallopian tube)
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apophysis
(anatomy) a natural outgrowth or projection on an organ or body part such as the process of a vertebra
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spicule, spiculum
small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals
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osteophyte
small abnormal bony outgrowth
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papilla
a small projection of tissue at the base of a hair or tooth or feather
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papilla
a small nipple-shaped protuberance concerned with taste, touch, or smell
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appendix, cecal appendage, vermiform appendix, vermiform process
a vestigial process that extends from the lower end of the cecum and that resembles a small pouch
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mastoid, mastoid bone, mastoid process, mastoidal
process of the temporal bone behind the ear at the base of the skull
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styloid process
extends from the base of the temporal bone
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pterygoid process
two bony processes descending from the body of the sphenoid bone
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eminence, tubercle, tuberosity
a protuberance on a bone especially for attachment of a muscle or ligament
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zygomatic process
a slender process of the temporal bone that strengthens the zygomatic arch
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trochanter
one of the bony prominences developed near the upper extremity of the femur to which muscles are attached
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transverse process
one of two processes that extend from each vertebra and provide the point of articulation for the ribs
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odontoid process
a toothlike process at the back of 2nd vertebra of the neck
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metaphysis
the growing part of a long bone between the diaphysis and the epiphysis
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olecranon, olecranon process
process of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extended
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ridge
any long raised border or margin of a bone or tooth or membrane
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excrescence
(pathology) an abnormal outgrowth or enlargement of some part of the body
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papilla
(botany) a tiny outgrowth on the surface of a petal or leaf
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enation, plant process
a natural projection or outgrowth from a plant body or organ
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antler
deciduous horn of a member of the deer family
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tuft
a bunch of feathers or hair
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topknot
showy crest or knot of hair or feathers
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chorionic villus
one of the tiny villi that stick out of the fetal chorion and combine with the mother's uterine tissue to form the placenta
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rattle
loosely connected horny sections at the end of a rattlesnake's tail
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cockscomb, comb, coxcomb
the fleshy red crest on the head of the domestic fowl and other gallinaceous birds
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ray
any of the stiff bony spines in the fin of a fish
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quill
a stiff hollow protective spine on a porcupine or hedgehog
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stylet
small needlelike appendage; especially the feeding organ of a tardigrade
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bristle
a stiff hair
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sensory hair, vibrissa, whisker
a long stiff hair growing from the snout or brow of most mammals as e.g. a cat
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seta
a stiff hair or bristle
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pilus
hairlike structure especially on the surface of a cell or microorganism
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brush
a bushy tail or part of a bushy tail (especially of the fox)
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bob, bobtail, dock
a short or shortened tail of certain animals
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caudal appendage
tail especially of a mammal posterior to and above the anus
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uropygium
posterior part of a bird's body from which the tail feathers grow
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oxtail
the skinned tail of cattle; used especially for soups
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fluke
either of the two lobes of the tail of a cetacean
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scut
a short erect tail
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flag
a conspicuously marked or shaped tail
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antenna, feeler
one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste
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barbel, feeler
slender tactile process on the jaws of a fish
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deltoid eminence, deltoid tuberosity
a bump on the outside of the humerus where the deltoid muscle attaches
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lappet, wattle
a fleshy wrinkled and often brightly colored fold of skin hanging from the neck or throat of certain birds (chickens and turkeys) or lizards
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condylar process, condyloid process, mandibular condyle
the condyle of the ramus of the mandible that articulates with the skull
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coronoid process of the mandible
the coronoid process that provides an attachment for the temporal muscle
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lateral condyle
a condyle on the outer side of the lower extremity of the femur
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medial condyle
a condyle on the inner side of the lower extremity of the femur
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lateral epicondyle
epicondyle near the lateral condyle of the femur
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superciliary arch, superciliary ridge, supraorbital ridge, supraorbital torus
a ridge on the frontal bone above the eye socket
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vegetation
an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
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podetium
an organ or body resembling a stalk; especially the outgrowth of the thallus of certain lichens on which the ascocarp is borne
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peristome
(botany) fringe of toothlike appendages surrounding the mouth of a moss capsule
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haustorium
a root-like attachment in parasitic plants that penetrates and obtains food from the host
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apophysis
(botany) a natural swelling or enlargement: at the base of the stalk or seta in certain mosses or on the cone scale of certain conifers
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callus
(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
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blister
(botany) a swelling on a plant similar to that on the skin
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nodule, tubercle
small rounded wartlike protuberance on a plant
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spur
tubular extension at the base of the corolla in some flowers
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aculeus
a stiff sharp-pointed plant process
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acumen
a tapering point
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fuzz, hair, tomentum
filamentous hairlike growth on a plant
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leaf node, node
(botany) the small swelling that is the part of a plant stem from which one or more leaves emerge
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burl
a large rounded outgrowth on the trunk or branch of a tree