organic phenomenon

Other forms: organic phenomena

Definitions of organic phenomenon

1. noun

   (biology) a natural phenomenon involving living plants and animals
   types:

   dominance

   the organic phenomenon in which one of a pair of alleles present in a genotype is expressed in the phenotype and the other allele of the pair is not

   abiogenesis, autogenesis, autogeny, spontaneous generation

   a hypothesis that living things gradually arose from nonliving matter

   alternation of generations, heterogenesis, xenogenesis

   the alternation of two or more different forms in the life cycle of a plant or animal

   annual ring, growth ring

   an annual formation of wood in plants as they grow

   bioelectricity

   electric phenomena in animals or plants

   circulation

   movement through a circuit; especially the movement of blood through the heart and blood vessels

   cyclosis, streaming

   the circulation of cytoplasm within a cell

   death

   the permanent end of all life functions in an organism or part of an organism

   decay, decomposition

   the organic phenomenon of rotting

   dehiscence

   (biology) release of material by splitting open of an organ or tissue; the natural bursting open at maturity of a fruit or other reproductive body to release seeds or spores or the bursting open of a surgically closed wound

   desquamation, peeling, shedding

   loss of bits of outer skin by peeling or shedding or coming off in scales

   exfoliation

   the peeling off in flakes or scales of bark or dead skin

   diapedesis

   passage of blood cells (especially white blood cells) through intact capillary walls and into the surrounding tissue

   facilitation

   (neurophysiology) phenomenon that occurs when two or more neural impulses that alone are not enough to trigger a response in a neuron combine to trigger an action potential

   food chain

   (ecology) a community of organisms where each member is eaten in turn by another member

   food pyramid

   (ecology) a hierarchy of food chains with the principal predator at the top; each level preys on the level below

   food cycle, food web

   (ecology) a community of organisms where there are several interrelated food chains

   gene expression

   conversion of the information encoded in a gene first into messenger RNA and then to a protein

   histocompatibility

   condition in which the cells of one tissue can survive in the presence of cells of another tissue

   life

   the organic phenomenon that distinguishes living organisms from nonliving ones

   life cycle

   a series of stages through which an organism passes between recurrences of a primary stage

   pleomorphism

   (biology) the appearance of two or more distinctly different forms in the life cycle of some organisms

   polymorphism

   (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences)

   polymorphism

   (genetics) the genetic variation within a population that natural selection can operate on

   recognition

   (biology) the ability of one molecule to attach to another molecule that has a complementary shape

   rejection

   (medicine) an immunological response that refuses to accept substances or organisms that are recognized as foreign

   greening, rejuvenation

   the phenomenon of vitality and freshness being restored

   sex linkage

   an association between genes in sex chromosomes that makes some characteristics appear more frequently in one sex than in the other

   digenesis, metagenesis

   alternation of sexual and asexual generations

   brain wave, brainwave, cortical potential

   (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph

   systemic circulation

   circulation that supplies blood to all the body except to the lungs

   pulmonary circulation

   circulation of blood between the heart and the lungs

   vitelline circulation

   circulation of blood between the embryo and the yolk sac

   biology

   characteristic life processes and phenomena of living organisms

   aerobiosis

   life sustained in the presence of air or oxygen

   cell death, necrobiosis

   (physiology) the normal degeneration and death of living cells (as in various epithelial cells)

   gangrene, mortification, necrosis, sphacelus

   the localized death of living cells (as from infection or the interruption of blood supply)

   brain death, cerebral death

   death when respiration and other reflexes are absent; consciousness is gone; organs can be removed for transplantation before the heartbeat stops

   dimorphism

   (biology) the existence of two forms of individual within the same animal species (independent of sex differences)

   SNP, single nucleotide polymorphism

   (genetics) genetic variation in a DNA sequence that occurs when a single nucleotide in a genome is altered; SNPs are usually considered to be point mutations that have been evolutionarily successful enough to recur in a significant proportion of the population of a species

   type of:

   natural phenomenon

   all phenomena that are not artificial