Webster's Revised Unabridged Dictionary · 1913

Periderm

Periderm , noun

1.

(Botany) The outer layer of bark.

2.

(Zoology) The hard outer covering of hydroids and other marine animals; the perisarc.

Text from the public-domain GNU Collaborative International Dictionary of English, derived from Webster's Revised Unabridged Dictionary (1913). Definitions marked with were added by later GCIDE contributors and are not in the original 1913 edition.

Enjoying the dictionary? Support its upkeep.

Contribute on GitHub, or report issues.