prothallium

[ proh-thal-ee-uhm ]

/ proʊˈθæl i əm /

noun, plural pro·thal·li·a [proh-thal-ee-uh]. /proʊˈθæl i ə/.

Botany. the gametophyte of ferns and related plants.

the analogous rudimentary gametophyte of seed-bearing plants.

Origin of prothallium

1855–60; <New Latin <Greek pro-pro-² + thallíon, diminutive of thallós young shoot; see -ium

OTHER WORDS FROM prothallium

pro·thal·li·al, pro·thal·lic, pro·thal·line

[proh-thal-een, -ahyn], /proʊˈθæl in, -aɪn/, adjectivepro·thal·loid, adjective

Words nearby prothallium

Proteus morganii, Proteus syndrome, Proteus vulgaris, prothalamion, prothalamium, prothallium, prothallus, prothesis, prothonotary, prothonotary apostolic, prothonotary warbler

Example sentences from the Web for prothallium

As soon as the fern is firmly established, the prothallium withers away.
Elements of Structural and Systematic Botany|Douglas Houghton Campbell
In the upper part of the prothallium several large archegonia are formed in much the same way as in the pteridophytes.
Elements of Structural and Systematic Botany|Douglas Houghton Campbell
The neck of the archegonium is quite long, but does not project above the surface of the prothallium (Fig. 77, H).
Elements of Structural and Systematic Botany|Douglas Houghton Campbell
The prothallium is of a peculiar dull-green colour, different from that of the young frond which is subsequently formed.
An Elementary Text-book of the Microscope|John William Griffith

To make these, the prothallium should be placed between small pieces of pith, and the razor must be very sharp.
Elements of Structural and Systematic Botany|Douglas Houghton Campbell

单词	prothallium
释义	prothallium [ proh-thal-ee-uhm ] / proʊˈθæl i əm / noun, plural pro·thal·li·a [proh-thal-ee-uh]. /proʊˈθæl i ə/. Botany. the gametophyte of ferns and related plants. the analogous rudimentary gametophyte of seed-bearing plants. Origin of prothallium 1855–60; <New Latin <Greek pro-pro-² + thallíon, diminutive of thallós young shoot; see -ium OTHER WORDS FROM prothallium pro·thal·li·al, pro·thal·lic, pro·thal·line [proh-thal-een, -ahyn], /proʊˈθæl in, -aɪn/, adjectivepro·thal·loid, adjective Words nearby prothallium Proteus morganii, Proteus syndrome, Proteus vulgaris, prothalamion, prothalamium, prothallium, prothallus, prothesis, prothonotary, prothonotary apostolic, prothonotary warbler Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for prothallium As soon as the fern is firmly established, the prothallium withers away. Elements of Structural and Systematic Botany\|Douglas Houghton Campbell In the upper part of the prothallium several large archegonia are formed in much the same way as in the pteridophytes. Elements of Structural and Systematic Botany\|Douglas Houghton Campbell The neck of the archegonium is quite long, but does not project above the surface of the prothallium (Fig. 77, H). Elements of Structural and Systematic Botany\|Douglas Houghton Campbell The prothallium is of a peculiar dull-green colour, different from that of the young frond which is subsequently formed. An Elementary Text-book of the Microscope\|John William Griffith To make these, the prothallium should be placed between small pieces of pith, and the razor must be very sharp. Elements of Structural and Systematic Botany\|Douglas Houghton Campbell
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