Defn: A compound of phenol analogous to a salt.
PHENOLOGY
Phe*nol"o*gy, n. [Contracted from Phenomenology.] (Biol.)
Defn: The science of the relations between climate and periodic biological phenomena, as the migrations and breeding of birds, the flowering and fruiting of plants, etc. — Phe`no*log"ic*al (#), a. — Phe`no*log"ic*al*ly, adv. — Phe*nol"o*gist (#), n.
PHENOLPHTHALEIN; PHENOL PHTHALEIN
Phe`nol*phthal"e*in, n., or Phenol phthalein. (Chem.)
Defn: A white or yellowish white crystalline substance, C20H14O4, formed by condensation of the anhydride of phthalic acid and phenol. Its solution in alkalies is brilliant red, but is decolorized by acids. This reaction, being very delicate, is used as an indicator.
PHENOMENAL
Phe*nom"e*nal, a. Etym: [Cf. F. phénoménal.]
Defn: Relating to, or of the nature of, a phenomenon; hence, extraordinary; wonderful; as, a phenomenal memory. — Phe*nom"e*nal*ly, adv.
PHENOMENALISM
Phe*nom"e*nal*ism, n. (Metaph.)
Defn: That theory which limits positive or scientific knowledge to phenomena only, whether material or spiritual.
PHENOMENIST
Phe*nom"e*nist, n.