An adjective for “half” in The Etymologies of the 1930s under the root ᴹ√PER “divide in middle, halve” (Ety/PER).
Conceptual Development: The Gnomish Lexicon (GL) of the 1910s had adjective G. elfeg and noun elef “half” (GL/32), the latter also used to mean “half a ...”, as in basgorn elef “✱half a loaf” (GL/53). In addition GL had lemp “a half”, and all these words word derived from the early root ᴱ√lef [LEǶE] which was the basis for ᴱQ. lempe “5” (GL/53), though in the contemporaneous Qenya Lexicon lexicon ᴱQ. lemin was “five” and ᴱQ. lempe “ten” (QL/52).
A noun in The Etymologies of the 1930s glossed “seashell” derived from primitive ᴹ✶syalmā under the root ᴹ√SYAL (Ety/SYAL).