alphabet

instrument

Definition of instrument:

part of speech: noun

A tool; a machine; a machine for the production of musical sounds; that by which something is prepared, produced, or done; a writing containing the terms of a contract; an agent, often in an ill sense.

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tetraspore

A germinating body among the algoe or sea- weeds, composed of four spore- like cells; also applied to those of three cells. ...

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