Etymology
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dermatology (n.)

"the science of the skin and its diseases," 1819, from dermat- "skin" + -logy. Related: Dermatological.

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phonetics (n.)

"phonetic science, scientific study of speech," 1841, from phonetic; also see -ics.

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hydrography (n.)

"science of the measurement and description of the sea," 1550s, from hydro- + -graphy. Related: Hydrographic.

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paleontology (n.)

also palaeontology, "the science of the former life of the Earth, as preserved in fossils," 1833, probably from French paléontologie, from Greek palaios "old, ancient" (see paleo-) + ontologie "science or study of being and the essence of things" (see ontology). Related: Paleontological.

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propaedeutic (n.)

"an introduction to an art or science," 1798, from Greek propaideuein "to teach beforehand," from pro "before" (see pro-) + paideuein "to teach," from pais (genitive paidos) "child" (see pedo-). By 1849 as an adjective, "pertaining to the introduction to any art or science."

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microbiology (n.)

"the science of micro-organisms," 1880, coined in English from micro- + biology. Related: Microbiological.

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rocketry (n.)

"science or use of rockets and rocket propulsion," 1930, from rocket (n.2) + -ry.

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psychometrics (n.)

"the science of measuring mental capacities and processes," 1917, from psychometry; also see -ics.

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gunning (n.)

1560s, "science of firing guns;" 1620s, "shooting," verbal noun from gun (v.).

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ophthalmology (n.)

"the medical science of the eye and its functions and diseases," 1822; see ophthalmo- + -logy. Related: Ophthalmological.

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