| 释义 |
▪ I. flocculate, a. Ent.|ˈflɒkjʊlət|
[f. flocculus + -ate2.]
(See quot.)
1826Kirby & Sp. Entomol. IV. 346 Flocculate, when the posterior coxæ are distinguished by a curling lock of hair.
▪ II. flocculate, v.|ˈflɒkjʊleɪt|
[f. as prec. + -ate3.]
trans. To aggregate into flocculent masses.
1877Le Conte Elem. Geol. (1879) 70 note, The property, possessed by lime..of flocculating and precipitating clay sediments.
Hence floccuˈlation, the process of flocculating.
1885Brewer in Amer. Jrnl. Sc. Ser. iii. XXIX. 4 The flocculation and precipitation of the suspended material is almost equally rapid. 1961Lancet 16 Sept. 631/1 Flocculation tests [were] negative.
Add:b. intr. To form flocculent masses.
1890in Webster. 1909F. P. Gay tr. Bordet's Stud. Immunity xxii. 421 When the salt solution which flocculates is removed and replaced by distilled water, the complex recovers its original appearance and is again disseminated. 1934L. E. H. Whitby Med. Bacteriol. (ed. 2) xxi. 205 Toxoid..also flocculates when mixed with antitoxin. 1971Nature 29 Oct. 590/1 The particulate matter tends to flocculate in the presence of high salinities. 1986M. Rigby et al. Forces between Molecules viii. 202 If the attractive forces so far considered were the only interactions between colloidal particles, they would always flocculate and form large aggregates. |