Abbreviation of proprietary (a type of corporation in Australia and South Africa)

(Australia, South Africa, business) Proprietary Limited, a type of company that has one or more shareholders and in which the number of shareholders is limited.

(botany) The way in which an individual leaf is folded in the bud.

Any placoderm of the order Ptyctodontida.

plural of ptyctodontid

Any placoderm of the order Ptyctodontida

plural of ptyctodont

(intransitive, rare) To spit. / (intransitive, rare) To salivate.

Any sialogogue.

plural of ptyalagogue