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Definition of protocorm in English:

protocorm

noun

Botany

  • In clubmosses and orchids, which grow in association with mycorrhiza: a tuberous body, with rhizoids, representing the embryonic plant and giving rise to primordial leaves.

Origin

Late 19th century; earliest use found in Frederic Bower (1855–1948), botanist. From proto- + corm, after French protocorme.

Pronunciation

protocorm

/ˈprəʊtə(ʊ)kɔːm/