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stoma

stoma is defined in Webster's Unabridged Dictionary (1913) with 2 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Bot.) (a) The minute breathing pores of leaves or other organs opening into the intercellular spaces, and usually bordered by two contractile cells. (b) The line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See Illust. of Sporangium.
  2. 2.(Zoöl.) A stigma. See Stigma, n., 6 (a) & (b).

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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