Definition of Mactra in English:

Mactra

noun ˈmaktrə

Zoology

A genus of marine bivalve molluscs of the family Tridacnidae (formerly Mactridae), which are typically several centimetres long with thin, triangular to ovate shells; (also mactra, plural mactrae, mactras) a mollusc of this genus, or its shell.

Origin

Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer. From scientific Latin Mactra (Linnaeus Systema Naturae (ed. 12, 1767) I. ii. 1125) from ancient Greek μάκτρα kneading trough, cognate with μάσσειν to knead.

Definition of Mactra in US English:

Mactra

nounˈmaktrə

Zoology

A genus of marine bivalve molluscs of the family Tridacnidae (formerly Mactridae), which are typically several centimetres long with thin, triangular to ovate shells; (also mactra, plural mactrae, mactras) a mollusc of this genus, or its shell.

Origin

Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer. From scientific Latin Mactra (Linnaeus Systema Naturae (ed. 12, 1767) I. ii. 1125) from ancient Greek μάκτρα kneading trough, cognate with μάσσειν to knead.

单词	Mactra
释义	Definition of Mactra in English: Mactra noun ˈmaktrə Zoology A genus of marine bivalve molluscs of the family Tridacnidae (formerly Mactridae), which are typically several centimetres long with thin, triangular to ovate shells; (also mactra, plural mactrae, mactras) a mollusc of this genus, or its shell. Origin Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer. From scientific Latin Mactra (Linnaeus Systema Naturae (ed. 12, 1767) I. ii. 1125) from ancient Greek μάκτρα kneading trough, cognate with μάσσειν to knead. Definition of Mactra in US English: Mactra nounˈmaktrə Zoology A genus of marine bivalve molluscs of the family Tridacnidae (formerly Mactridae), which are typically several centimetres long with thin, triangular to ovate shells; (also mactra, plural mactrae, mactras) a mollusc of this genus, or its shell. Origin Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer. From scientific Latin Mactra (Linnaeus Systema Naturae (ed. 12, 1767) I. ii. 1125) from ancient Greek μάκτρα kneading trough, cognate with μάσσειν to knead.
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