acrosomal vesicle n.
A vesicle derived from the Golgi apparatus during spermiogenesis; its membrane adheres to the nuclear envelope of the sperm and, together the the acrosomal granule within the vesicle, spreads in a thin layer over the pole of the nucleus to form the acrosomal cap.
the first sprout appearing in the germination of grain; the developed plumule of the seed. Historical Examples By about the eighth day of flooring the acrospire should be about three-quarters up the corn. Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 4 Various The malting, however, is complete before the acrospire becomes a leaf. A Dictionary […]
a borne at the tip of a sporophore, as a basidiospore.
from one side to the other of: a bridge across a river. on or to the other side of; beyond: across the sea. into contact with; into the presence of, usually by accident: to come across an old friend; to run across a first edition of Byron. crosswise of or transversely to the length of […]
- Across the board
applying to all employees, members, groups, or categories; general: The across-the-board pay increase means a raise for all employees. (of a bet) covering all possibilities of winning on a given result, especially by placing a combination bet on one horse in a race for win, place, and show. a piece of wood sawed thin, and […]