perisperm

noun

peri·​sperm

ˈperəˌspərm

1

: nutritive tissue of a seed derived from the nucellus and deposited external to the embryo sac

—distinguished from endosperm

2

: nutritive tissue of a seed that includes both endosperm and perisperm

—not used technically

perispermal

¦⸗⸗¦spərməl

adjective

or perispermic

-mik

Word History

Etymology

French périsperme, from péri- peri- + -sperme -sperm

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