bibliothecary n.

word-forming element meaning "book" or sometimes "Bible," from Greek biblion "paper, scroll," also the ordinary word for "a book as a division of a larger work;" originally a diminutive of byblos "Egyptian papyrus." This is perhaps from Byblos, the Phoenician port from which Egyptian papyrus was exported to Greece (modern Jebeil, in Lebanon; for sense evolution compare parchment). Or the place name might be from the Greek word, which then would be probably of Egyptian origin. Compare Bible. Latin liber (see library) and English book also are ultimately from plant-words.

*dhē-, Proto-Indo-European root meaning "to set, put."

It forms all or part of: abdomen; abscond; affair; affect (v.1) "make a mental impression on;" affect (v.2) "make a pretense of;" affection; amplify; anathema; antithesis; apothecary; artifact; artifice; beatific; benefice; beneficence; beneficial; benefit; bibliothec; bodega; boutique; certify; chafe; chauffeur; comfit; condiment; confection; confetti; counterfeit; deed; deem; deface; defeasance; defeat; defect; deficient; difficulty; dignify; discomfit; do (v.); doom; -dom; duma; edifice; edify; efface; effect; efficacious; efficient; epithet; facade; face; facet; facial; -facient; facile; facilitate; facsimile; fact; faction (n.1) "political party;" -faction; factitious; factitive; factor; factory; factotum; faculty; fashion; feasible; feat; feature; feckless; fetish; -fic; fordo; forfeit; -fy; gratify; hacienda; hypothecate; hypothesis; incondite; indeed; infect; justify; malefactor; malfeasance; manufacture; metathesis; misfeasance; modify; mollify; multifarious; notify; nullify; office; officinal; omnifarious; orifice; parenthesis; perfect; petrify; pluperfect; pontifex; prefect; prima facie; proficient; profit; prosthesis; prothesis; purdah; putrefy; qualify; rarefy; recondite; rectify; refectory; sacrifice; salmagundi; samadhi; satisfy; sconce; suffice; sufficient; surface; surfeit; synthesis; tay; ticking (n.); theco-; thematic; theme; thesis; verify.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit dadhati "puts, places;" Avestan dadaiti "he puts;" Old Persian ada "he made;" Hittite dai- "to place;" Greek tithenai "to put, set, place;" Latin facere "to make, do; perform; bring about;" Lithuanian dėti "to put;" Polish dziać się "to be happening;" Russian delat' "to do;" Old High German tuon, German tun, Old English don "to do."

also bibliothek, Old English biblioðece "the Bible, the Scriptures," from Latin bibliotheca "library, room for books; collection of books" (in Late Latin and Medieval Latin especially "the Bible"), from Greek bibliothēkē, literally "book-repository," from biblion "book" (see biblio-) + thēkē "case, chest, sheath," from suffixed form of PIE root *dhe- "to set, put." Used of the Bible by Jerome and serving as the common Latin word for it until Biblia began to displace it 9c. (see Bible). The word was later reborrowed from French as bibliotheque (16c.).