quaternary
英 [kwə'tɜːn(ə)rɪ]
美 [kwə'tɝnəri]
英語の語源
- quaternary (adj.)
- early 15c., "consisting of four parts," from Latin quaternarius "of four each, containing four," from quaterni "four each, by fours," from quater "four times," related to quattuor "four" (see four). Also as a noun, "the number four" (mid-15c.), from Latin quaternarius.
In geological sense, attested from 1843 in English, proposed 1829 by French geologist Jules Pierre Fran?ois Stanislas Desnoyers (1800-1887) as name for "the fourth great epoch of geological time," but because it comprises only the age of man, and the other epochs are many hundred times longer, not all accepted it.
例文
- 1. Cationics are usually quaternary ammomium salts.
- カチオン界面活性剤は、通常、4級アンモニウム塩類である。
- 2.The Quaternary sediments are largey undeformed.
- 第四紀の堆積物の大部分は変形していない。
-
- 3. Moreover , there is a chiral quaternary carbon in the 1 - hydroxyethylidenediphosphonic ( hedp ) ligand.
- 1-ヒドロキシエチリデン-1,1-ジホスホン酸リガンド（hedp）中の四級炭素がキラル炭素原子であることを確認した。
- 4.China 's Datong group of volcanic Quaternary volcanic one of the group.
- 大同火山群は我が国の第四紀火山群の一つである。
- 5.Iron-nickel-phosphorus-boron quaternary alloy electroless plating on copper panel was described.
- 銅基に鉄-ニッケル-リン-ホウ素四元合金を化学めっきした.
-