The Collaborative International Dictionary
Nucamentaceous
Nucamentaceous \Nu`ca*men*ta"ceous\, a. [See Nucament.] (Bot.) Like a nut either in structure or in being indehiscent; bearing one-seeded nutlike fruits. [Written also nucumentaceous.]
Wiktionary
nucamentaceous
a. (context botany English) Like a nut either in structure or in being indehiscent; bearing one-seeded nut-like fruits.