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单词 testa
释义

testa


tes·ta

T0125200 (tĕs′tə)n. pl. tes·tae (-tē′) The protective, often hard outer coat of a seed.
[Latin, shell.]

testa

(ˈtɛstə) n, pl -tae (-tiː) (Botany) a hard protective outer layer of the seeds of flowering plants; seed coat[C18: from Latin: shell; see test2]

tes•ta

(ˈtɛs tə)

n., pl. -tae (-tē). the outer, usu. hard, integument or coat of a seed. [1790–1800; < New Latin, Latin; see test2]

tes·ta

(tĕs′tə) See seed coat.
Thesaurus
Noun1.testa - protective outer layer of seeds of flowering plantstesta - protective outer layer of seeds of flowering plantsepisperm, seed coatreproductive structure - the parts of a plant involved in its reproductionseed - a mature fertilized plant ovule consisting of an embryo and its food source and having a protective coat or testa

testa


testa

a hard protective outer layer of the seeds of flowering plants; seed coat

testa

[′tes·tə] (botany) A seed coat. Also known as episperm.

testa


tes·ta

(tes'tă), 1. In protozoology, usually termed test; an envelope of certain forms of ameboid protozoa, consisting of various earthy materials cemented to a chitinous base (as in the testate rhizopods of the subclass Testacealobosia) or the calcareous, siliceous, organic, or strontium sulfate skeletons in the rhizopod subclass Foraminifera. 2. In botany, the outer, sometimes the only, coat of a seed. [L. shell]

tes·ta

(tes'tă) 1. In protozoology, usually termed test; an envelope of certain forms of ameboid protozoa, consisting of various early materials cemented to a chitinous base (as in the testate rhizopods of the subclass Testacealobosia) or the calcareous, siliceous, organic, or strontium sulfate skeletons in the rhizopod subsclass Foraminifera.
Synonym(s): test (6).
2. In botany, the outer, sometimes the only, coat of a seed. [L. shell]

testa

a protective coat around the seed, formed from the INTEGUMENTS of the OVULE. At one area on the testa is the hilum, at one end of which is often found the MICROPYLE. Sometimes the testa is responsible for seed dormancy, a state which is broken when the coat ruptures (see GERMINATION).
LegalSeeTeste

TESTA


AcronymDefinition
TESTATrans European Services for Telematics Between Administrations
TESTATexas Earth Science Teachers Association (Science Teachers Association of Texas)
TESTATurf Equipment Service Technicians Association (Estero, FL)

testa


Related to testa: Tesla
  • noun

Synonyms for testa

noun protective outer layer of seeds of flowering plants

Synonyms

  • episperm
  • seed coat

Related Words

  • reproductive structure
  • seed
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更新时间:2025/2/28 20:17:43