Words related to -ar

alveolar (adj.)
1799, "pertaining to the sockets of the teeth," from a modern medical use of Latin alveolus "socket, small hollow or cavity" (see alveolus) + -ar. Sense extended 19c. to other anatomical hollows.
appendicular (adj.)
1650s, from Latin appendicula "a little addition, small appendage," diminutive of appendix (see appendix) + -ar. In anatomy, opposed to axial.
avuncular (adj.)

"of or pertaining to an uncle," 1789, from Latin avunculus "maternal uncle," diminutive of avus (see uncle) + -ar. Used humorously for "of a pawnbroker" (uncle was slang for "pawnbroker" from c. 1600 through 19c.).

Being in genteel society, we would not, of course, hint that any one of our readers can remember so very low and humiliating a thing as the first visit to "my Uncle"—the first pawnbroker. We have been assured though, by those whose necessities have sometimes compelled them to resort, for assistance, to their avuncular relation, that the first visit—the primary pawning—can never be forgotten. [Household Words, May 15, 1852]
carbuncular (adj.)
"of, pertaining to, or resembling a carbuncle; red, inflamed," 1737, from Latin carbunculus (see carbuncle) + -ar.
curricular (adj.)

1798, "pertaining to driving or carriages;" from Latin curriculum "fast chariot" (from currere "to run, move quickly;" from PIE root *kers- "to run") + -ar. From 1881 in reference to systems of education.

fibrillar (adj.)
"pertaining to or of the nature of fibrillae," 1847, from fibrilla (see fibril) + -ar.
formular (n.)
1560s, "a model, exemplar," from Latin formula (see formula) + -ar. As an adjective, from 1773 as "formal, correct;" 1880 as "of or pertaining to a formula."
granular (adj.)
1790, from Late Latin granulum "granule, a little grain," diminutive of Latin granum "grain, seed" (from PIE root *gre-no- "grain") + -ar. Replaced granulous (late 14c.). Related: Granularity.
intramuscular (adj.)
also intra-muscular, 1874, from intra- "within" + muscle (Latin musculus) + -ar.