Prothallus
Prothallus Pro*thal"lus, n.; pl. {Prothalli}. [NL., fr. Gr. ? before + ? a young shoot.] (Bot.) The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the o["o]phoric generation of ferns, etc. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • prothallus — noun Etymology: New Latin Date: 1854 1. the gametophyte of a pteridophyte (as a fern) that is typically a small flat green thallus attached to the soil by rhizoids 2. a greatly reduced structure of a seed plant corresponding to the pteridophyte… …   New Collegiate Dictionary

  • prothallus — Independent gametophyte phase of horsetail or fern …   Dictionary of molecular biology

  • prothallus — /proh thal euhs/, n., pl. prothalli / thal uy/. Bot. prothallium. [1850 55; < NL; see PRO , THALLUS] * * * …   Universalium

  • prothallus — noun A prothallium …   Wiktionary

  • prothallus — pro·thal·lus (pro thalґəs) the independent, free living gametophyte generation of ferns and related lower vascular plants …   Medical dictionary

  • prothallus — [prəʊ θaləs] noun (plural prothalli lʌɪ, li:) Botany the gametophyte of ferns and related plants. Derivatives prothallial adjective Origin C19: mod. L., from pro 2 + Gk thallos green shoot …   English new terms dictionary

  • prothallus — pro·thallus …   English syllables

  • prothallus — pro•thal•lus [[t]proʊˈθæl əs[/t]] n. pl. thal•li [[t] ˈθæl aɪ[/t]] bot prothallium …   From formal English to slang

  • prothallus — n. (pl. prothalli) Bot. the gametophyte of certain plants, esp. a fern. Etymology: mod.L f. PRO (2) + Gk thallos green shoot …   Useful english dictionary

  • Prothalli — Prothallus Pro*thal lus, n.; pl. {Prothalli}. [NL., fr. Gr. ? before + ? a young shoot.] (Bot.) The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the o[ o]phoric generation of ferns, etc …   The Collaborative International Dictionary of English

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