petiolule Bot.
(pɛtɪˈɒljuːl)
[ad. mod.L. petiolul-us, dim. of petiolus petiole; also in mod.F. (Littré).]
A partial or secondary petiole; the footstalk of a leaflet in a compound leaf.
| 1832 Lindley Introd. Bot. i. ii. 94 In all truly compound leaves the petiole is articulated with each petiolule. 1861 Bentley Man. Bot. (1870) 167 The divisions of the petiole..are then called petiolules, stalklets, or partial petioles. |
Hence petiˈolular a. [= F. pétiolulaire], pertaining to a petiolule; petiˈolulate a. [= F. pétiolulé], having, or borne upon, a petiolule.
| 1858 Mayne Expos. Lex., Petiolular. 1881 Baker in Jrnl. Linn. Soc. 267 Leaflets 7,..alternate, petiolulate. |