"pertaining to or relating to cosmology," 1780, from cosmology + -ical. Greek kosmologikos meant "pertaining to physical philosophy." Related: Cosmologically.
Entries linking to cosmological
cosmology n.
1650s, "general science or theory of the material universe as an ordered whole," from Modern Latin cosmologia, from Greek kosmos (see cosmos) + -logia "discourse" (see -logy). By 1753 as "the branch of metaphysics which discusses the ultimate philosophical problems relating to the existence of the universe." Related: Cosmologist.
They cannot scare me with their empty spaces
Between stars—on stars where no human race is.
I have it in me so much nearer home
To scare myself with my own desert places.
[Robert Frost, from "Desert Places," 1936]
-ical
compound adjectival word-forming element, usually interchangeable with -ic but sometimes with specialized sense (such as historic/historical, politic/political), Middle English, from Late Latin -icalis, from Latin -icus + -alis (see -al (1)). Probably it was needed because the forms in -ic often took on a noun sense (for example physic). Forms in -ical tend to be attested earlier in English than their twins in -ic.