PETALIFORM
Pe*tal"i*form, a. (Bot.)

Defn: Having the form of a petal; petaloid; petal-shaped.

PETALINE
Pet"al*ine, a. Etym: [Cf. F. pétalin.] (Bot.)

Defn: Pertaining to a petal; attached to, or resembling, a petal.

PETALISM
Pet"al*ism, n. Etym: [Gr. pétalisme.] (Gr. Antiq.)

Defn: A form of sentence among the ancient Syracusans by which they banished for five years a citizen suspected of having dangerous influence or ambition. It was similar to the ostracism in Athens; but olive leaves were used instead of shells for ballots.

PETALITE
Pet"al*ite, n. Etym: [Cf. F. pétalite.] (Min.)

Defn: A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia.

PETALODY
Pe*tal"o*dy, n. Etym: [Petal + Gr. (Bot.)

Defn: The metamorphosis of various floral organs, usually stamens, into petals.