Entry 3 senses · 2 variants Webster, 1913 Lignose /(lĭg*nōs")/ · Lig·nose · IPA /ˈlɪɡnəʊz/ a. n. 01 a. Ligneous. 1. Ligneous.[R.] 02 n. See Lignin. 1. See Lignin.(Bot.) See: Lignin 2. An explosive compound of wood fiber and nitroglycerin. See Nitroglycerin.(Chem.) See: Nitroglycerin