Quick Definition
terror, consternation
Strong's Definition
alarm
Derivation: from G4422 (πτοέω);
KJV Usage: amazement
Thayer's Greek Lexicon
πτόησις, πτοησεως, ἡ (πτοέω), terror: φοβεῖσθαι πτόησιν, equivalent to φόβον φοβεῖσθαι, to be afraid with terror (others take πτόησις objectively: R. V. text to be put in fear by any terror), 1Pe_3:6 (Pro_3:25); see φοβέω, 2; (Winers Grammar, § 32, 2; Buttmann, § 131, 5. (1Ma_3:25; Philo, quis rev. div. her. § 51)).
Mounce Concise Greek Dictionary
πτόησις ptoēsis 1x
consternation, dismay, 1Pe_3:6
Abbott-Smith Greek Lexicon
πτόησις , -εως , ἡ ( < πτοέω ),
[in LXX : Pro_3:25 ( H6343 ), Sir 50:4 ΰ 1, 1Ma_3:25 R * ;]
a fluttering, excitement, caused by any emotion, but esp . by fear, hence, terror : φοβεῖσθαι πτόησιν , to be afraid with ( cogn . acc ) or of any terror ( v. ICC , in l ): 1Pe_3:6 .†
Liddell-Scott — Intermediate Greek Lexicon
πτόησις [Etym: πτοέω] "passionate excitement", Plat.
STEPBible — Tyndale Abridged Greek Lexicon
πτόησις, -εως, ἡ
(πτοέω) [in LXX: Pro.3:25 (פַּחַד), Sir 50:4 א1, 1Ma.3:25 R * ;]
a fluttering, excitement, caused by any emotion, but esp. by fear, hence, terror: φοβεῖσθαι πτόησιν, to be afraid with (cogn. accusative) or of any terror (see ICC, in l): 1Pe.3:6.†
(AS)