precipitant

a. 突如其来的, 勇往直前的, 急促的, 径直向下的 n. 沉淀剂

发音

UK /prɪˈsɪpɪt(ə)nt/
US /priˈsɪpətənt/
US /prə-/
US /-ɾənt/

词形变化

precipitants 复数 precipitants more precipitant 比较级 most precipitant 最高级

释义与例句

n.
  1. 1.

    Something which causes or hastens the occurrence of an act or event; specifically (chiefly psychology), something which brings about a mental or physiological condition.

  2. 2.

    A substance that, when added to a solution, causes a dissolved substance to form a precipitate.

    化学
adj.
  1. 1.

    Inclined to make rapid decisions without due consideration; hasty, impulsive, rash.

  2. 2.

    Of a fall: straight downwards; headlong.

  3. 3.

    Acting, happening, or moving quickly; fast, rapid, swift; also, abrupt, sudden, unexpected.

    比喻
  4. 4.

    That causes precipitation (“formation of a heavier solid in a lighter liquid as a result of a chemical reaction”).

    化学
adv.
  1. 1.

    Synonym of precipitantly (“in a precipitant or headlong manner; with foolish or rash haste”).

    古体

词汇关系

名词

上位词 1

agent

下位词 1

dimethylglyoxime
形容词

同义词 4

hasty precipitate precipitous overhasty

近义相关 1

hurried

词源

The adjective is borrowed from Middle French précipitant, Old French precipitant (“acting hastily, hasty, rash; acting, happening, or moving rapidly; pressing”) (modern French précipitant), and from their etymon Late Latin praecipitans (“hasty, rash”), an adjective use of Latin praecipitāns, the present participle of praecipitō (“to cast down; to throw headlong”), from praeceps (“head first, headlong; (figurative) hasty, rash”) (from prae (“before; in front”) (ultimately from Proto-Indo-European *preh₂- (“before; in front”)) + -ceps (suffix meaning ‘having a head with specified characteristics’) (ultimately from Proto-Indo-European *kap- (“a head”))). The adverb and noun are derived from the adjective.

来源：wiktionary