名詞 caustic:

1. any chemical substance that burns or destroys living tissue

形容詞 caustic:

1. harsh or corrosive in tone
   同義詞：acerb, acerbic, acid, acrid, bitter, blistering, sulfurous, sulphurous, venomous, virulent, vitriolic
2. of a substance, especially a strong acid; capable of destroying or eating away by chemical action
   同義詞：corrosive, erosive, vitriolic, mordant

1. A dry scab or slough formed on the skin as a result of a burn or by the action of a corrosive or caustic substance.
   焦痂由燒傷或通過腐蝕或侵蝕物質作用而導致皮膚形成的干疤或死肉
2. An agent or instrument used to destroy abnormal tissue by burning, searing, or scarring, including caustic substances, electric currents, lasers, and very hot or very cold instruments.
   燒灼劑通過燒、灼或結疤手段用于破壞不正常人體組織的藥劑或儀器，包括腐蝕物質、電流、激光以及極熱或極冷的儀器
3. A caustic verbal attack.
   諷刺刻薄的口頭上的攻擊

caus.tic

adj.（形容詞）
Capable of burning, corroding, dissolving, or eating away by chemical action.
腐蝕性的：通過化學反應可被灼燒、腐蝕、消融或蝕盡的
Corrosive and bitingly trenchant; cutting.See Synonyms at sarcastic
刻薄的：惡意諷刺的且十分銳利的；諷刺的參見 sarcastic
Causing a burning or stinging sensation, as from intense emotion:
感情強烈的：引起發(fā)燒或不自在的心理感受的，如因強烈的感情：
例句：
.Most of all, there is caustic shame for my own stupidity.(Scott Turow)
.最嚴重的是由于我自身的愚蠢而產生的無地自容的羞辱.(斯科特·圖羅)

Of or relating to light emitted from a point source and reflected or refracted from a curved surface.
焦散的：由一個點光源發(fā)出并從曲面反射或折射的光的或關于這種光的
n.（名詞）
A caustic material or substance.
腐蝕性物質或材料
A hydroxide of a light metal.
輕金屬的氫氧化物
A caustic curve or surface.
焦散曲面，焦散表面

來源：
Middle English caustik
中古英語 caustik
from Latin causticus
源自 拉丁語 causticus
from Greek kaustikos
源自 希臘語 kaustikos
from kaustos
源自 kaustos
from kaiein kau- [to burn]
源自 kaiein kau- [燃燒]

【引伸】
caus.tically
adv.（副詞）
caustic.ity