CAUSTICALLY

caustically, vitriolically

(adverb) in a caustic vitriolic manner; “he addressed her caustically”

Source: WordNet® 3.1

Etymology

Adverb

caustically (comparative more caustically, superlative most caustically)

In a caustic manner.

Source: Wiktionary

Caus"tic*al*ly, adv.

Definition: In a caustic manner.

CAUSTIC

Caus"tic, Caus"tic*al, a. Etym: [L. caustucs, Ge. Calm, Ink.]

1. Capable of destroying the texture of anything or eating away its substance by chemical action; burning; corrosive; searing.

2. Severe; satirical; sharp; as, a caustic remark. Caustic curve (Optics), a curve to which the ray of light, reflected or refracted by another curve, are tangents, the reflecting or refracting curve and the luminous point being in one plane.

– Caustic lime. See under Lime.

– Caustic potash, Caustic soda (Chem.), the solid hydroxides potash, KOH, and soda, NaOH, or solutions of the same.

– Caustic silver, nitrate of silver, lunar caustic.

– Caustic surface (Optics), a surface to which rays reflected or refracted by another surface are tangents. Caustic curves and surfaces are called catacaustic when formed by reflection, and diacaustic when formed by refraction.

Syn.

– Stinging; cutting; pungent; searching.

Cau"stic, n. Etym: [L. causticum (sc. medicamentum). See Caustic, a.]

1. Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

2. (Optics)

Definition: A caustic curve or caustic surface.

CAUSTICAL