Etymology
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quiescence (n.)

"state or quality of being inactive," 1630s, from Latin quiescentia, from quiescere "to rest" (from suffixed form of PIE root *kweie- "to rest, be quiet"). Related: Quiescency.

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dormancy (n.)

1723, state of being dormant, quiescence;" see dormant + -cy. Middle English had dormitacioun "sleep, sleeping" (mid-15c.)

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