Calcar

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A small oven or furnace, used for the calcination of sand and potash, and converting them into frit.
  2. 2
    A spur-like projection.

    "... a calcar, the apical spine of the inner series must in many of the species be also considered as such, since the appearance of both, and their position as regards the calcaria, are precisely similar. This apical spine of the inner[…]"

Example

More examples

"... a calcar, the apical spine of the inner series must in many of the species be also considered as such, since the appearance of both, and their position as regards the calcaria, are precisely similar. This apical spine of the inner[…]"

Etymology

Etymology 1

From the Italian calcara (“lime-kiln”).

Etymology 2

From the Latin calcar (“spur”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.