Etymology
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iatro- 
word-forming element meaning "a physician; medicine; healing," from Greek iatros "healer, physician" (see -iatric).
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dose (n.)

early 15c., "the giving of medicine (in a specified amount or at a stated time)," from Old French dose (15c.) or directly from Medieval Latin dosis, from Greek dosis "a portion prescribed," literally "a giving," used by Galen and other Greek physicians to mean an amount of medicine, from stem of didonai "to give" (from PIE root *do- "to give").

Meaning "quantity of medicine given or prescribed" is from c. 1600. Extended sense, in reference to anything given to be "swallowed," literal or figurative, is from c. 1600. Slang meaning "a case of venereal disease" is by 1914.

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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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decompensation (n.)

"lack or loss of compensation," especially, in medicine, "deterioration of a structure that had worked through compensation," 1900, from de- + compensation.

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sugar-coat (v.)
also sugarcoat, 1870, originally of medicine; figuratively, "make more palatable," from 1910; from sugar (n.) + coat (v.). Related: Sugarcoated; sugarcoating.
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systemic (adj.)
1803, irregularly formed from system + -ic; used in medicine and biology for differentiation of meaning from systematic. Related: Systemically.
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pediatrics (n.)

"medical treatment of children; the branch of medicine dealing with the study of childhood and diseases of children," 1884; from pediatric; see -ics.

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medical (n.)

1917, short for medical examination. Earlier it was colloquial for "a student or practitioner of medicine" (1823).

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phlebo- 

word-forming element in medicine meaning "a vein or veins," from Greek phlebo-, combining form of phleps "vein," a word of uncertain origin.

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synergist (n.)
1650s, in theology, one who holds the doctrine of synergism (q.v.); from 1876 in medicine. For ending, see -ist.
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