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|lshtext=<b>aestus</b>: ūs (archaic<br /><b>I</b> gen. aesti, Pac. 97 Rib.; [[rare]] form of nom. plur. aestuus). m. [[kind]]. [[with]] [[aestas]] and Gr. [[αἴθω]]; v. [[aestas]], an undulating, [[boiling]], [[waving]], [[tossing]]; a [[waving]], [[heaving]], billowy [[motion]].<br /><b>I</b> Lit.<br />&nbsp;&nbsp;&nbsp;<b>A</b> Of [[fire]]; [[hence]], in gen., [[fire]], [[glow]], [[heat]] (orig. in [[relation]] to its [[flashing]] up; [[while]] [[fervor]] denotes a [[glowing]], [[ardor]] a [[burning]], and [[calor]] a warming [[heat]]; [[yet]] it [[was]] [[early]] used for warming [[heat]]; v. the [[following]] [[example]]): nam [[fretus]] [[ipse]] anni permiscet [[frigus]] et aestum, [[heat]] and [[cold]] are [[blended]], Lucr. 6, 364 (for [[which]] [[calor]], id. 6, 368, 371 al.): [[multa]] aestu victa per agros, id. 5, 1104: exsuperant flammae, furit [[aestus]] ad auras, Verg. A. 2, 759: caniculae, Hor. C. 1, 17, 18; so id. Ep. 1, 8, 5: labore et aestu [[languidus]], Sall. J. 51.—In plur.: [[neque]] frigora [[neque]] [[aestus]] [[facile]] tolerabat, Suet. Aug. 81.—So of midday [[heat]]: aestibus at mediis umbrosam exquirere vallem, Verg. G. 3, 331 (cf. Cic. Ac. 2, 22: [[ille]] cum aestuaret, umbram secutus est).—And of the [[heat]] of [[disease]] (of wounds, [[fever]], [[inflammation]], etc.): ulceris [[aestus]], Att. ap. Cic. Tusc. 2, 7, 19: homines aegri cum aestu febrique jactantur, Cic. Cat. 1, 13.—<br />&nbsp;&nbsp;&nbsp;<b>B</b> The undulating, [[heaving]] [[motion]] of the [[sea]], the [[swell]], [[surge]]: fervet aestu [[pelagus]], Pac. ap. Cic. de Or. 3, 39; [[hence]], meton. for the [[sea]] in [[agitation]], waves, billows: delphines aestum secabant, Verg. A. 8, 674: furit [[aestus]] harenis, id. ib. 1, 107: [[aestus]] totos campos inundaverant, Curt. 9, 9, 18.—In Verg. [[once]] of the [[boiling]] up of [[water]] in a [[vessel]]: exsultant aestu latices, Aen. 7, 464.—<br />&nbsp;&nbsp;&nbsp;<b>C</b> Esp., the [[periodical]] [[flux]] and reflux or [[ebb]] and [[flow]] of the [[sea]], the [[tide]] (cf. Varr. L. L. 9, 19; Mel. 3, 1: [[aestus]] maris accedere et reciprocare [[maxime]] mirum, pluribus [[quidem]] modis, sed [[causa]] in [[sole]] lunāque, Plin. 2, 97, 99); Plaut. As. 1, 3, 6: [[quid]] de fretis aut de marinis aestibus dicam? quorum [[accessus]] et [[recessus]] ([[flow]] and [[ebb]]) lunae motu gubernantur, Cic. Div. 2, 14 fin.: crescens, Plin. 2, 100, 97, § 219: decedens, id. ib.: recedens, id. 2, 98, 101, § 220: [[secundus]], in [[our]] [[favor]], Sall. Fragm. ap. Gell. 10, 26, 2: [[adversus]], [[against]] us, id. ap. Non. 138, 8.—<br /><b>II</b> Trop.<br />&nbsp;&nbsp;&nbsp;<b>A</b> The [[passionate]] [[ferment]] or [[commotion]] of the [[mind]], the [[fire]], [[glow]], [[ardor]] of [[any]] ([[even]] a [[good]]) [[passion]] (cf. [[aestuo]], II. A.): et belli magnos commovit [[funditus]] [[aestus]] ([[genus]] humanum), has stirred up from [[their]] [[very]] [[bottom]] the waves of [[discord]], Lucr. 5, 1434: [[civilis]] belli [[aestus]], Hor. Ep. 2, 2, 47 (cf. id. C. 2, 7, 15): [[repente]] te [[quasi]] [[quidam]] [[aestus]] ingenii tui [[procul]] a terrā abripuit [[atque]] in [[altum]] abstraxit, Cic. de Or. 3, 36: hunc absorbuit [[aestus]] [[quidam]] gloriae, id. Brut. 81: stultorum regum et populorum continet [[aestus]], Hor. Ep. 1, 2, 8: perstet et, ut pelagi, sic pectoris adjuvet aestum, the [[glow]] of [[love]], Ov. H. 16, 25.—<br />&nbsp;&nbsp;&nbsp;<b>B</b> A [[vacillating]], [[irresolute]] [[state]] of [[mind]], [[doubt]], [[uncertainty]], [[hesitation]], [[trouble]], [[embarrassment]], anxiely: qui [[tibi]] [[aestus]], qui [[error]], quae [[tenebrae]], Cic. Div. in Caecin. 14: [[vario]] fluctuat aestu, Verg. A. 12, 486: [[amor]] magno irarum fluctuat aestu, id. ib. 4, 532; cf. id. ib. 8, 19: [[aestus]] curaeque graves, Hor. S. 1, 2, 110.—<br />&nbsp;&nbsp;&nbsp;<b>C</b> In the Epicurean philos. lang. of [[Lucretius]], the undulatory [[flow]] or [[stream]] of atoms, atomic efflux, as the [[cause]] of [[perception]] (cf. [[affluo]], I.): Perpetuoque fluunt certis ab rebus odores, Frigus ut a fluviis, [[calor]] ab [[sole]], [[aestus]] ab undis Aequoris, [[exesor]] moerorum litora [[propter]], etc., Lucr. 6, 926; and in id. 6, 1002 sq., the magnetic [[fluid]] is [[several]] times designated by [[aestus]] lapidis.
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