-logic

comb. form (also -logical) forming adjectives corresponding esp. to nouns in -logy (pathological; theological).
Etymology: from or after Gk -logikos: see -IC, -ICAL

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a combining form used in the formation of adjectives corresponding to nouns ending in -logy: analogic.

[ < Gk -logikós. See LOGIC]

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comb. form equivalent to -logical (as in pharmacologic)

Origin:

from Greek -logikos

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-ological ; -logical ; (also -ologic, -logic) (in adjectives)

•

pathological

Main entry: ↑-ology_derived

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-logic, -logical

(ˈlɒdʒɪk, ˈlɒdʒɪkəl)

endings originally occurring in adaptations (through F. and L.) of Gr. adjs. in -λογικός, derived from adjs. and ns. in -λογος, -λογον, which have derivative nouns of quality or function in -λογία, represented in Eng. by -logy. As the meaning of an adj. in -logic(al) may with substantial correctness be rendered by ‘pertaining to ―logy’, such adjs. are commonly apprehended as derivatives of the related ns. (as if f. ―logy + -ic). In general, the existence of a n. in -logy now implies the potential existence of a correlative adj. in -logical (the exceptions being confined to a few of the older words, such as apology, which have corresponding adjs. of different formation). For the difference in meaning between adjs. in -logic and the (now much more frequent) adjs. in -logical, see -ical, and cf. the note under geologic 1.