Etymology
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addict (n.)
"one given over to some practice," 1909, first in reference to morphine, from addict (v.).
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dyeing (n.)

"the operation or practice of fixing colors in solution in textiles, hides, hair, etc.," late 14c., verbal noun from dye (v.).

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hermetically (adv.)
c. 1600, "according to hermetic practice," especially, chemically, "by means of fusion," from hermetical (see hermetic) + -ly (2).
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cookery (n.)

"art or practice of cooking and dressing food for the table," late 14c.; see cook (n.) + -ery.

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quackery (n.)

"the boastful pretensions or knavish practice of a quack, particularly in medicine" [Century Dictionary], 1690s, from quack (n.1) + -ery.

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athletics (n.)
"art or practice of athletic games or exercises," c. 1730, from athletic; also see -ics. Probably formed on model of gymnastics.
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waterboard (n.)
1610s (n.), "gutter," from water (n.1) + board (n.1). Waterboarding as the name of a type of torture is from 2005, but the practice is older.
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pomiculture (n.)

"the art or practice of fruit-growing," by 1852, probably from French pomiculture (1830), from Latin pomus "fruit" (see Pomona); also see culture (n.).

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commercialism (n.)

1849, "principles and practice of commerce," from commercial (adj.) + -ism. By 1889 as "predominance of commercial pursuits in a place or community."

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rehearsal (n.)

late 14c., rehersaille, "restatement, repetition of the words of another; account, narration," from rehearse + -al (2), or from Old French rehearsal "a repeating." Sense in theater and music, "act or process of studying by practice or preparatory exercise, a meeting of musical or dramatic performers for practice and study together" is from 1570s. A play being in rehearsal is from 1709. Pre-wedding rehearsal dinner attested by 1953.

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