[ 'kɔ:stɪk , 'kɒst- ]
■ adjective
1》 able to burn or corrode organic tissue by chemical action.
2》 scathingly sarcastic.
3》 Physics formed by the intersection of reflected or refracted parallel rays from a curved surface.
■ noun
1》 a ~ substance.
2》 Physics a ~ surface or curve.
Derivatives
~ally adverb
~ity noun
Origin
ME: via L. from Gk kaustikos , from kaustos 'combustible', from kaiein 'to burn'.