εὐτον-ία, ἡ,
tension, vigour, [[ 1st c.BC: Diodorus Siculus Historicus 5.39; σκελῶν [prev. work] 34: especially in Stoic philosophical (compare τόνος), 3rd c.BC: Chrysippus Stoicus 2.146, etc.] Refs 3rd c.BC+]; ὁ ἐν τῇ ψυχῇ τόνος λέγεται ὡς εὐ. καὶ ἀτονία[[ [prev. work] 3.123, compare 1st c.BC: Philodemus Gadarensis Epigrammaticus “Ir.” p.69 W.] Refs 1st c.BC+]; εὐ. ψυχῆς, of courage, [[ “Stoicorum Veterum Fragmenta” 3.66, compare 73] Refs]: generally, vigour of character, [[ 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Phocion” 3, 2.456f, “BGU” 786ii 1 (2nd c.AD)] Refs 1st c.AD+]; also, vigour of style, [[ 1st c.BC: Dionysius Halicarnassensis “de Veterum Censura” 2.3, 2nd c.AD: Hermogenes Rhetor “περὶ ἰδεῶν” 1.11, Aps. p.282 H. ] Refs 1st c.BC+]
__b in Medicine texts, tension, [[ 2nd c.AD: Rufus Medicus “de satyriasmo et gonorrhoea” 46 (_plural_)] Refs 2nd c.AD+]; also μαλθακὴ εὐ. gentle force, [[ 5th c.BC: Hippocrates Medicus “ἐπιστολαί” 15. ] Refs 5th c.BC+]
__c elasticity, [[ 3rd-2nd c.BC: Philo Mechanicus “(Belopoeica) Excerpte aus Philons Mechanik - Ath. Berl. Akad.” 71.33. ] Refs 3rd c.BC+]