1846, "an instance of abnormality, irregularity, deformity;" 1853 as "fact or quality of being abnormal," from abnormal (q.v.) + -ity. Earlier was abnormity (1731), but according to OED the earlier word has more "depreciatory force" than the later one. Abnormalism "tendency to be abnormal" is from 1847. As a verb, abnormalize (1855) seem to be rare.

1846, in pathology, adjective from abscess (n.). If there is a verb abscess it would be a back-formation from this.

1846, from affiliate (v.) via the adjective. Compare associate (n.). Affiliated society in reference to a local society connected with another or associated with a central organization is attested from 1795.

"having no angle," 1846, from Greek agōnos, from a- "not" (see a- (3)) + -gōnos "angled," from gōnia "angle, corner" (from PIE root *genu- (1) "knee; angle"). In reference to the imaginary line on the earth's surface connecting points where the magnetic declination is zero.

"of or pertaining to the algae," 1846, from Latin alga (see algae) + -al (1).

1846, "insensible;" 1847, "producing temporary loss of sensation," with -ic + Latinized form of Greek anaisthētos "insensate, without feeling; senseless, tactless, stupid" (see anesthesia). The noun meaning "agent that produces anesthesia" was first used in the modern sense 1848 by Scottish doctor James Young Simpson (1811-1870), pioneer in the surgical use of chloroform.

"semicircular extension at the end of a church," 1846, from Latin apsis "an arch, a vault," from Greek hapsis (Ionic apsis) "loop, arch," originally "a fastening, felloe of a wheel," from haptein "fasten together," which is of unknown origin. The original sense in Greek seems to have been the joining of the arcs to form a circle, especially in making a wheel. The architectural term is earlier attested in English in the Latin form (1706). Related: Apsidal.

1846, from Assyria + -ology. Related: Assyriologist.

"self-generated," 1846, earlier autogeneal (1650s), from Greek autogenetos "self-born," from autos "self" (see auto-) + genetos "born," from genes "formation, creation" (from PIE root *gene- "give birth, beget"). The modern form and biological use of the word are said to be due to English paleontologist Richard Owen.

"one who has charge of a bar in a tavern, etc.," 1846, probably short for barkeeper (1712); from bar (n.2) + agent noun of keep (v.).