Etymology
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cementation (n.)

"process of producing cohesion," 1590s, from cement (v.) + noun ending -ation.

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benumb (v.)

"deprive of sensation," late 15c., from be- + numb. Originally of mental states; of the physical body from 1520s. Related: Benumbed; benumbing.

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psychoactive (adj.)

also psycho-active, "of or pertaining to drugs that affect mental states," 1959, from psycho- + active.

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languishment (n.)

1540s, "sorrow caused by love;" 1590s, "sickness; mental distress," from languish (v.) + -ment.

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ballooning (n.)

"art or process of ascending in and managing a balloon," 1784, verbal noun from balloon (v.).

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chemical (n.)

"a substance produced by a chemical process, a chemical agent," 1747, from chemical (adj.). Related: Chemicals.

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circumbendibus (n.)

"a roundabout way or process, a circumlocution," 1680s, a mock-Latin formation from circum- + bend (n.).

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activation (n.)

"action or process of making or being operative," 1906, noun of action from activate (v.).

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lactation (n.)

1660s, "process of suckling an infant," from French lactation, from Late Latin lactationem (nominative lactatio) "a suckling," noun of action from past-participle stem of lactare "to suckle," from lac (genitive lactis) "milk" (from PIE root *g(a)lag- "milk"). Meaning "process of secreting milk from the breasts" first recorded 1857. Related: Lactational.

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resorption (n.)

"fact or process of reabsorption, retrogressive absorption," 1670s, noun of action from resorb.

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