Per″i‐sperm (?), n. [F. périsperme. See Peri-, and Sperm.] (Bot.) The albumen of a seed, especially that portion which is formed outside of the embryo sac. — Per′i‐sper″mic (#), a.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.