egg-laying

The compound adjective 'egg-laying' is a transparent and descriptive formation from core Germanic vocabulary. The first element, 'egg', entered English from Old Norse, supplanting the native Old English term and solidifying its meaning for the familiar reproductive body. The second element derives from the Old English verb 'lecgan', meaning to put or place down, which evolved into the modern 'lay'. The suffix '-ing', also of Old English origin, is used to form adjectives from verbs, indicating the action or capacity. Thus, the term's literal logic—"the action or characteristic of depositing eggs"—perfectly captures its precise biological meaning, describing a fundamental mode of reproduction distinct from live-bearing.

Structure: egg (reproductive body) + lay (to deposit) + ing (adjective-forming suffix) egg: Old Norse origin (egg), referring to the reproductive body of a bird, reptile, etc. lay: Old English origin (lecgan), meaning to place or deposit something on a surface. ing: Old English origin (suffix -ende, -ing), forming present participles and adjectives from verbs.