Quick Definition
a little papyrus roll
Strong's Definition
a booklet
Derivation: a diminutive of G975 (βιβλίον);
KJV Usage: little book
Thayer's Greek Lexicon
βιβλαρίδιον, βιβλαριδιου, τό (diminutive of the diminutive βιβλάριον from ἡ βίβλος), a little book: Rev_10:2; Rev_10:8 (L Tr WH βιβλίον, Tdf. 2 and 7 βιβλιδάριον, which see), 9, 10. Not found in secular authors (Hermas, vis. 2, 4, 3 [ET]); cf. Winer's Grammar, 96 (91).
STRONGS NT 974a: βιβλιδάριονβιβλιδάριον, βιβλιδαριου, τό (from βιβλίδιον, like ἱματιδαριον, from ἱματίδιον), a little book: Rev_10:8 Tdf. (editions 2 and) 7. (Aristophanes fragment 596.)
Mounce Concise Greek Dictionary
βιβλαρίδιον biblaridion 3x
a small volume or scroll, a little book, Rev_10:2 ; Rev_10:9-10
Abbott-Smith Greek Lexicon
*† βιβλαρίδιον , -ου , τό
(dim, of βιβλάριον , dim , of βίβλος ),
a little book: Rev_10:2 ; Rev_10:8
( WH , βιβλίον , Τ Rev_10:2 ; Rev_10:7 βιβλιδάριον ) Rev_10:9-10 . Not hitherto found elsewhere.†
βιβλιδάριον , -ου , τό , see βιβλαρίδιον .
STEPBible — Tyndale Abridged Greek Lexicon
βιβλαρίδιον, -ου, τό (diminutive of βιβλάριον, diminutive of βίβλος),
a little book: Rev.10:2, 8 (WH, βιβλιόν, T2, 7 βιβλιδάριον) 9, 10. Not hitherto found elsewhere.†
(AS)