Dictionary

prothallus

noun pro·thal·lus \(ˌ)prō-ˈtha-ləs\

Definition of PROTHALLUS

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 prothallus
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Illustration of PROTHALLUS

Origin of PROTHALLUS

New Latin
First Known Use: 1854

Rhymes with PROTHALLUS

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