What does the word bivalve?
: being or having a shell composed of two valves. bivalve. noun. Definition of bivalve (Entry 2 of 2) : any of a class (Bivalvia synonym Pelecypoda) of typically marine mollusks (such as clams, oysters, or scallops) that have a 2-valved hinged shell, are usually filter feeders, and lack a distinct head.
What is a hinged shell?
A bivalve shell is part of the body, the exoskeleton or shell, of a bivalve mollusk. In life, the shell of this class of mollusks is composed of two hinged parts or valves. It is secreted by a part of the molluscan body known as the mantle. The shells of bivalves are equal sides connected by a hinge.
What is another name for a bivalve?
noun. Also called lamellibranch. Zoology. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills.
What is a clam foot?
The clam’s foot is used to dig down into the sand, and a pair of long incurrent and excurrent siphons that extrude from the clam’s mantle out the side of the shell reach up to the water above (only the exit points for the siphons are shown). Clams are filter feeders. The second siphon carries away the water.
What are cardinal teeth?
Definition of cardinal tooth : a tooth of the hinge of a bivalve mollusk’s shell situated just under the umbo and often relatively large — compare lateral tooth.
How many molluscs are there?
Around 85,000 extant species of molluscs are recognized. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats.
What is the purpose of the foot in a clam?
Like all mollusks, a clam has a mantle which surrounds its soft body. It also has a muscular foot which enables the clam to burrow itself in mud or sand. The soft tissue above the foot is called the visceral mass and contains the clam’s body organs.
What is the oldest part of the shell called?
In anatomy, an apex (adjectival form: apical) is part of the shell of a mollusk. The apex is the pointed tip (the oldest part) of the shell of a gastropod, scaphopod, or cephalopod.
What is an abracadabra and what does it mean?
originally, an abracadabra was a cryptogram of the word “abracadabra” that was repeated in diminishing form until it disappeared entirely—supposedly just like the targeted evil or misfortune. after some abracadabra the spiritualist announced that we had made contact with “the other side”.
What is a prismatic word?
adjective of, relating to, or like a prism. formed by or as if by a transparent prism. spectral in color; brilliant: prismatic colors. highly varied or faceted: a prismatic existence.
What is a prismatic color?
adjective of, relating to, or like a prism. formed by or as if by a transparent prism. spectral in color; brilliant: prismatic colors.
What makes a book repetitive and prismatic?
Each telling brings new details or perspective, making the book both repetitive and prismatic. She talks in a prismatic way that I find perfect for the telephone—a back and forth of recognitions, observations, and phrases.