Late 18th century; earliest use found in Thomas Martyn (1735–1825), botanist. From scientific Latin petiolarispetiolar: see -ary. Compare earlier petiolar.
Definition of petiolary in US English:
petiolary
adjective
Botany
Petiolar.
Origin
Late 18th century; earliest use found in Thomas Martyn (1735–1825), botanist. From scientific Latin petiolaris petiolar: see -ary. Compare earlier petiolar.