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perfunctory
Definition: (adjective) unenthusiastic, routine, or mechanical.
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li·gase  audio  (lgs, -gz) KEY 

NOUN:
Any of a class of enzymes that catalyze the linkage of two molecules, generally utilizing ATP as the energy donor. Also called synthetase.
ETYMOLOGY:
Latin ligre, to bind; see leig- in Indo-European roots + -ase


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