nodular (adj.)

"a little lump or knot," c. 1400, from Latin nodulus "small knot," diminutive of nodus "knot" (from PIE root *ned- "to bind, tie"). Related: Nodulated; nodulous; nodulation.

word-formation element meaning "pertaining to, of the nature of," from Latin -arem, -aris "of the kind of, belonging to," a secondary form (by dissimilation) of -alis, used after syllables with an -l- (such as insularis for *insulalis, stellaris for *stellalis).