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Webster 1913 Edition

(-bĭ-tā′shŭs)

Adj.

[Cf. F.

cucurbitacé

(Bot.)

Of, pertaining to, or resembling, a family of plants of which the cucumber, melon, and gourd are common examples.

Adj.

Resembling a gourd; as cucurbitaceous plants, such as the melon and pumpkin or pompion.

cucurbitaceous ‎(comparative more cucurbitaceous, superlative most cucurbitaceous)

Pertaining to the gourd family, including cucumbers, pumpkins etc.
- 1973, Thomas Pynchon, Gravity's Rainbow:
  On he goes, gabbing, gabbing, recipes for preparing beets in a hundred tasty ways, or such cucurbitaceous improbabilities as Ernest Pudding’s Gourd Surprise