[ ˌfi:nɒl'(f)θali:n , -'(f)θeɪl- ]
■ noun Chemistry a colourless crystalline solid (pink in alkaline solution) used as an acid–base indicator. [C 20 H 14 O 4 .]
Origin
C19: from phenol + -phthal- (from naphthalene ) + -in 1 .
[ ˌfi:nɒl'(f)θali:n , -'(f)θeɪl- ]
■ noun Chemistry a colourless crystalline solid (pink in alkaline solution) used as an acid–base indicator. [C 20 H 14 O 4 .]
Origin
C19: from phenol + -phthal- (from naphthalene ) + -in 1 .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004