A bloom is a flower. You might mark the beginning of spring by the very first bloom you see in your garden.

The noun bloom is useful for talking about blossoms themselves, but you can also use it as a verb meaning the process of flowering: "Those trees seemed to bloom overnight!" Another meaning of bloom is more figurative, meaning the peak or ideal moment for something. The bloom of your career selling Girl Scout cookies might be one sunny weekend outside the local supermarket. The origin of the word bloom is the Old Norse word blóm, "flower or blossom."

Definitions of bloom
  1. verb
    produce or yield flowers
    “The cherry tree bloomed
    synonyms: blossom, flower
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    burst forth, effloresce
    come into or as if into flower
    type of:
    grow, progress, unfold, or evolve through a process of evolution, natural growth, differentiation, or a conducive environment
  2. noun
    reproductive organ of angiosperm plants especially one having showy or colorful parts
    synonyms: blossom, flower
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    show 14 types...
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    floret, floweret
    a diminutive flower (especially one that is part of a composite flower)
    apetalous flower
    flower having no petals
    the flowering part of a plant or arrangement of flowers on a stalk
    ray floret, ray flower
    small flower with a flat strap-shaped corolla usually occupying the peripheral rings of a composite flower
    a partially opened flower
    the flower of a chrysanthemum plant
    flower head
    a shortened compact cluster of flowers so arranged that the whole gives the effect of a single flower as in clover or members of the family Compositae
    ament, catkin
    a cylindrical spikelike inflorescence
    the bud of a rose
    flat-topped or rounded inflorescence characteristic of the family Umbelliferae in which the individual flower stalks arise from about the same point; youngest flowers are at the center
    flat-topped or convex inflorescence in which the individual flower stalks grow upward from various points on the main stem to approximately the same height; outer flowers open first
    flower cluster
    an inflorescence consisting of a cluster of flowers
    more or less flat-topped cluster of flowers in which the central or terminal flower opens first
    (botany) an indeterminate inflorescence bearing sessile flowers on an unbranched axis
    type of:
    reproductive structure
    the parts of a plant involved in its reproduction
  3. noun
    the organic process of bearing flowers
    “you will stop all bloom if you let the flowers go to seed”
    synonyms: blooming
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    type of:
    biological process, organic process
    a process occurring in living organisms
  4. noun
    the period of greatest prosperity or productivity
    synonyms: blossom, efflorescence, flower, flush, heyday, peak, prime
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    golden age
    a time period when some activity or skill was at its peak
    type of:
    period, period of time, time period
    an amount of time
  5. noun
    the best time of youth
    synonyms: bloom of youth, salad days
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    type of:
    time of life
    a period of time during which a person is normally in a particular life state
  6. noun
    a rosy color (especially in the cheeks) taken as a sign of good health
    synonyms: blush, flush, rosiness
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    type of:
    good health, healthiness
    the state of being vigorous and free from bodily or mental disease
  7. noun
    a powdery deposit on a surface
    synonyms: efflorescence
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    type of:
    crystallisation, crystallization, crystallizing
    the formation of crystals
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