1722, "of or pertaining to Biblical Solomon," with -ic. Solomonical is attested from 1520s. Solomonian (1747) also is used.
Entries linking to solomonic
Solomon
masc. proper name, Biblical name of David's son and successor as king of Judah and Israel and wisest of all men, from Greek Solomon, from Hebrew Sh'lomoh, from shelomo "peaceful," from shalom "peace." The Arabic form is Suleiman.
The common form formerly was Salomon (Vulgate, Tyndale, Douai); Solomon was used in Geneva Bible and KJV. Used allusively for "a wise ruler" since 1550s. The Solomon Islands were so named 1568 by Spanish explorers in hopeful expectation that they had found the source of the gold brought to King Solomon in I Kings ix.29.
-ic
Middle English -ik, -ick, word-forming element making adjectives, "having to do with, having the nature of, being, made of, caused by, similar to," from French -ique and directly from Latin -icus or from cognate Greek -ikos "in the manner of; pertaining to." From PIE adjective suffix *-(i)ko, which also yielded Slavic -isku, adjectival suffix indicating origin, the source of the -sky (Russian -skii) in many surnames. In chemistry, indicating a higher valence than names in -ous (first in benzoic, 1791).
In Middle English and after often spelled -ick, -ike, -ique. Variant forms in -ick (critick, ethick) were common in early Modern English and survived in English dictionaries into early 19c. This spelling was supported by Johnson but opposed by Webster, who prevailed.