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Definition of Prothallus
1. n. The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oöphoric generation of ferns, etc.
Definition of Prothallus
1. Noun. A prothallium. ¹
¹ Source: wiktionary.com
Definition of Prothallus
1. [n -THALLI or -THALLUSES]