The Collaborative International Dictionary
Protonemata
Protonema \Pro`to*ne"ma\, n.; pl. Protonemata. [NL., fr. Gr. ? first + ?, ?, a thread.] (Bot.) The primary growth from the spore of a moss, usually consisting of branching confervoid filaments, on any part of which stem and leaf buds may be developed.
Wiktionary
protonemata
n. (plural of protonema English)
WordNet
protonemata
See protonema