Entry 1 sense Webster, 1913 Excretory /ĕk'-skrət-ôrˌ-ē/ · Ex·cre·to·ry · IPA /ˈɛkskrətˌɔriː/ 01 a. Having the quality of excreting, or throwing off excrementitious matter. 1. Having the quality of excreting, or throwing off excrementitious matter.