Quick Definition
deadly, mortal
Strong's Definition
fatal, i.e. poisonous
Derivation: from G2288 (θάνατος);
KJV Usage: deadly
Thayer's Greek Lexicon
θανάσιμος, θανάσιμόν (θανεῖν, θάνατος), deadly: Mar_16:18. ((Aeschylus), Sophocles, Euripides, Plato, and following.)
Mounce Concise Greek Dictionary
θανάσιμος thanasimos 1x
deadly, mortal, fatal, Mar_16:18
Abbott-Smith Greek Lexicon
* θανάσιμος , -ον
( < θάνατος ),
deadly: Mar_16:18 .†
Moulton & Milligan — Vocabulary of the Greek NT
θανάσιμος [page 283]
The phrase in [Mk] 16:18 may be paralleled from a defixio from Cnidus, Syll 815 .2 , where a woman devotes to Demeter and Kore τὸν κατ᾽ ἐμοῦ [ε ]ἴπ [α ]ντα ὅτι ἐγὼ τῶι ἐμῶι ἀνδ [ρὶ ] φάρμακα ποιῶ θανά [σιμα if the restoration is sound.
Liddell-Scott — Intermediate Greek Lexicon
θανάσιμος θα^ν^άσι^μος, ον [Etym: θνήσκω] "deadly", Trag. , etc. "of or belonging to death", θαν. αἷμα (as we say) "the life-" blood, Aesch. ; μέλψασα θ. γόον having sung my "death-" song, id=Aesch. of persons, "near death", Soph. , Plat. : "subject to death, mortal", Plat. : also "dead", Soph.
STEPBible — Tyndale Abridged Greek Lexicon
θανάσιμος, -ον
(θάνατος),
deadly: Mrk.16:18.†
(AS)