Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Some degree of stress is usually maintained on the first syllable, e.g.bibliogony n.

Origin: Partly a borrowing from French. Partly a borrowing from Latin. Etymons: French biblio-; Latin biblio-.

Etymology: < French biblio- (in e.g. bibliothèque bibliothèque n.) and its etymon classical Latin biblio- (in e.g. bibliothēca bibliotheca n.) < ancient Greek βιβλίο- (in e.g. βιβλιοπώλης bibliopole n.), stem and combining form of βιβλίον book (see Bible n.); compare -o- connective.
Attested in the Old English period in the Latin loanword bibliotheca n., and from the 16th cent. in further borrowings from Latin (e.g. bibliothecary n.) and from French (e.g. bibliothèque n.). New formations within English are recorded from at least the 19th cent. (e.g. bibliology n., bibliophobia n., bibliopoesy n.).

 

 In compounds formed in Greek itself, as bibliography, βιβλιογραϕία; and in many of modern formation, as bibliogony, biblioklept, bibliophagist, etc., some of which are merely pedantic or ponderously humorous.

"biblio-, comb. form." OED Online, Oxford University Press, December 2021, www.oed.com/view/Entry/18620. Accessed 6 January 2022.

From Greek biblion ‘book’.

“BIBLIO- English Definition and Meaning.” Lexico.com, 2022, https://www.lexico.com/en/definition/biblio-. Accessed 6 January 2022.