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单词 capitulum
释义

capitulum

enUK

ca·pit·u·lum

C0088300 (kə-pĭch′ə-ləm)n. pl. ca·pit·u·la (-lə) 1. A compact cluster of sessile flowers, often surrounded by involucral bracts, as of daisies and other composite plants.2. A small knob or head-shaped part, such as a protuberance of a bone or the tip of an insect's antenna.
[Latin, diminutive of caput, capit-, head; see kaput- in Indo-European roots.]

capitulum

(kəˈpɪtjʊləm) n, pl -la (-lə) 1. (Botany) a racemose inflorescence in the form of a disc of sessile flowers, the youngest at the centre. It occurs in the daisy and related plants2. (Anatomy) anatomy zoology a headlike part, esp the enlarged knoblike terminal part of a long bone, antenna, etc3. (Zoology) anatomy zoology a headlike part, esp the enlarged knoblike terminal part of a long bone, antenna, etc[C18: from Latin, literally: a little head, from caput head]

ca•pit•u•lum

(kəˈpɪtʃ ə ləm)

n., pl. -la (-lə). any globose or knoblike part, as a flower head or the head of a bone. [1715–25; < Latin: small head; see chapter]
Thesaurus
Noun1.capitulum - a dense cluster of flowers or foliage; "a head of cauliflower"; "a head of lettuce"headplant organ - a functional and structural unit of a plant or fungus
2.capitulum - fruiting spike of a cereal plant especially cornspike, earcorn, Indian corn, maize, Zea mays - tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian timesmealie - an ear of cornfruit - the ripened reproductive body of a seed plant
3.capitulum - an arrangement of leafy branches forming the top or head of a treecapitulum - an arrangement of leafy branches forming the top or head of a treetreetop, crown - the upper branches and leaves of a tree or other plant

Capitulum

enUK

capitulum

[kə′pich·ə·ləm] (biology) A rounded, knoblike, usually terminal proturberance on a structure. (botany) One of the rounded cells on the manubrium in the antheridia of lichens belonging to the Caliciales.

Capitulum

 

(also head) a monopodial inflorescence in plants whose main axis has thickened into a patelliform or globular surface on which small flowers are usually distributed. The flowers are tubular, ligulate, or pseudoligulate. This type of inflorescence is primarily characteristic of plants of the family Compositae (daisy, dandelion, and sunflower). It is also found among plants of the families Umbelliferae (eryngo and sanicle) and Campanulaceae (sheep's-bit). The capitulum is surrounded by a many-leaved involucre, formed by the bracts of the outer flower (in sheep's-bit) or by modified apical leaves (in Compositae). This structure aids in the pollination of the flowers. In the process of evolution, several biological adaptations occurred to prevent self-pollination. For example, the flowers open gradu-ally, and the stamens develop earlier than the pistils. The capitulum developed from the umbel as a result of the reduction of the length of the flower stem.

capitulum

enUK

capitulum

 [kah-pit´u-lum] (pl. capi´tula) (L.) a small eminence on a bone, as on the distal end of the humerus, by which it articulates with another bone.

ca·pit·u·lum

, pl.

ca·pit·u·la

(kă-pit'yū-lŭm, -lă), 1. A small head or rounded articular extremity of a bone.
See also: caput. Synonym(s): capitellum (1)
2. The bloodsucking, probing, sensing, and holdfast mouthparts of a tick, including the basal supporting structure; relative size and shape of mouthparts forming the capitulum are characteristic for the genera of hard ticks. [L. dim. of caput, head]

capitulum

(kə-pĭch′ə-ləm)n. pl. capitu·la (-lə) 1. A compact cluster of sessile flowers, often surrounded by involucral bracts, as of daisies and other composite plants.2. A small knob or head-shaped part, such as a protuberance of a bone or the tip of an insect's antenna.

ca·pit·u·lum

, pl. capitula (kă-pit'yū-lŭm, -lă) 1. [TA] A small head or rounded articular extremity of a bone.
Synonym(s): capitellum (1) .
2. The bloodsucking, probing, sensing, and holdfast mouthparts of a tick, including the basal supporting structure; relative size and shape of mouthparts forming the capitulum are characteristic for the genera of hard ticks.
See also: caput
[L. dim. of caput, head]

capitulum

  1. (in animals) the rounded rib head which articulates with the centrum of the vertebra.
  2. (in plants) a head of flowers.

ca·pit·u·lum

, pl. capitula (kă-pit'yū-lŭm, -lă) [TA] Small osseous articular extremity of a bone. [L. dim. of caput, head]

capitulum

enUK
  • noun

Synonyms for capitulum

noun a dense cluster of flowers or foliage

Synonyms

  • head

Related Words

  • plant organ

noun fruiting spike of a cereal plant especially corn

Synonyms

  • spike
  • ear

Related Words

  • corn
  • Indian corn
  • maize
  • Zea mays
  • mealie
  • fruit

noun an arrangement of leafy branches forming the top or head of a tree

Related Words

  • treetop
  • crown
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更新时间:2024/11/12 6:17:15