WordReference Random House Unabridged Dictionary of American English © 2025
ac•ro•spire
(ak′rə spīər′),USA pronunciation n. [Bot.]
- Botanythe first sprout appearing in the germination of grain;
the developed plumule of the seed.
- 1610–20; acro- + spire1; replacing akerspire, equivalent. to aker (Old English æchir ear of grain) + spire
'acrospire' also found in these entries (note: many are not synonyms or translations):