英语词源字典 - 在线词源网站

picogram [picogram 词源字典]: "One million-millionth of a gram. Abbreviated pg", 1950s; earliest use found in Nature: a weekly journal of science. From pico- + gram.[picogram etymology, picogram origin, 英语词源]
plagiograph: "An instrument for reproducing a plan, diagram, etc., in a position at a given angle from the original", Late 19th cent.; earliest use found in Nature: a weekly journal of science.
allochthon: "An allochthonous rock or mineral formation; especially a part of a faulted formation that has been displaced by tectonic forces. Contrasted with autochthon", Late 19th cent.; earliest use found in Nature: a weekly journal of science. Apparently from allo- + -chthon.
cryptovolcanic: "Of a phenomenon or structure (especially a crater): apparently volcanic but occurring or formed in the absence of evident volcanic activity", Early 20th cent.; earliest use found in Nature: a weekly journal of science. From crypto- + volcanic, after German kryptovulkanisch.
asteroseismology: "The study of the interior of stars by the observation and analysis of oscillations at their surface", 1980s; earliest use found in Nature: a weekly journal of science. From ancient Greek ἀστερο-, combining form of ἀστήρ star + seismology.
acarophilous: "That lives in or is adapted for a symbiotic relationship with mites; specifically (of a plant) pollinated by mites", Late 19th cent.; earliest use found in Nature: a weekly journal of science. From scientific Latin Acarus acarus + -o- + -philous, after German akarophil and entomophilous.
odograph: "A device for automatically recording the course of a vehicle. Also (in early use): an instrument for measuring the length of stride of a person, animal, etc., and the number of paces taken", Late 19th cent.; earliest use found in Nature: a weekly journal of science. From French odographe (Étienne-Jules Marey, 1878) from ancient Greek ὁδός way + French -graphe.