1. bivalve - Noun
2. bivalve - Adjective
A mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth. The shell is closed by the contraction of two transverse muscles attached to the inner surface, as in the clam, -- or by one, as in the oyster. See Mollusca.
A pericarp in which the seed case opens or splits into two parts or valves.
Having two shells or valves which open and shut, as the oyster and certain seed vessels.
Source: Webster's dictionaryAviculopecten subcardiformis; a bivalve from the Logan Formation (Lower Carboniferous) of Wooster, Ohio (external mold). Source: Internet
As the adductor muscle of the shellfish relaxes, more stomach is inserted and when digestion is complete, the stomach is returned to its usual position in the starfish with its now liquefied bivalve meal inside it. Source: Internet
"Enjoy the oysters" was often said to a person planning on traveling to New York City, so strong was the bivalve as an icon of the city. Source: Internet
It is thought that natural pearls form under a set of accidental conditions when a microscopic intruder or parasite enters a bivalve mollusk and settles inside the shell. Source: Internet
This tissue enables a starfish to change from moving flexibly around the seabed to becoming rigid while prying open a bivalve mollusc or preventing itself from being extracted from a crevice. Source: Internet
The bitterlings of subfamily Acheilognathinae are notable for depositing their eggs in bivalve molluscs, where the young develop until able to fend for themselves. Source: Internet