noun, plural pro·thal·li·a [proh-thal-ee-uh]. /proʊˈθæl i ə/.
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Origin of prothallium
OTHER WORDS FROM prothalliumpro·thal·li·al, pro·thal·lic, pro·thal·line [proh-thal-een, -ahyn], /proʊˈθæl in, -aɪn/, adjectivepro·thal·loid, adjective
Words nearby prothallium
Example sentences from the Web for prothallium
As soon as the fern is firmly established, the prothallium withers away.
In the upper part of the prothallium several large archegonia are formed in much the same way as in the pteridophytes.
The neck of the archegonium is quite long, but does not project above the surface of the prothallium (Fig. 77, H).
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.