phthal·ein also phthal·eine (th l  n , thl- n, th ln, thl-n, fthl-)n. Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol, from which certain synthetic dyes are derived. [phthal(ic) + -ein.] |
phthalein [ˈθeɪliːn -lɪɪn ˈθæl- ˈfθæl-]
n
(Chemistry / Elements & Compounds) any of a class of organic compounds obtained by the reaction of phthalic anhydride with a phenol and used in dyes
[from phthal-, shortened form of naphthalene + -in]
| phthalein (thln, thln, fthl-) Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol. They are used to derive certain synthetic dyes. |
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