A.“ἵδρυ_σα” Il.15.142, E. Ba.1070: pf. ἵδρυ_κα (καθ-) Arist.PA665b20:—Med., fut. “-ύσομαι” E. Heracl.397, Ar.Pl.1198: aor. “ἱδρυ_σάμην” Hdt.6.105, Anacr.104, Ar. Pl.1153:—Pass., fut. “ἱδρυθήσομαι” D.H.Comp.6: aor. “ἱδρύθην” Ar.Fr. 245, etc.; freq. written ἱδρύνθην in codd., as Il.3.78, Hp.Coac.309, A.R.3.1269: pf. ἵδρυ_μαι, used both in pass. and med. sense (v. sub fin.). [ι^ by nature, E.Ba.1070, Ar.Fr.26 D., etc., but freq. lengthd. by position, E.Hipp.639, Ar.Pl.1153, etc.: υ_ by nature, even in “ἱδρύεται” E.Heracl.786; but “ἵδρυ^ε” Il.2.191; “καθίδρυ^ε” Od.20.257: υ_ in fut. and aor. 1, exc. in late Poets, as AP7.109 (ἐν-, <D.L.>), Man.3.80 (dub.), Arch.Pap.2.570, Nonn.D.4.22: pf. Pass. “ἵδρυ_μαι” A.Supp. 413, E.Heracl.19, Hel.820, Theoc.17.21, etc.:—make to sit down, seat, “αὐτός τε κάθησο καὶ ἄλλους ἵδρυε λαούς” Il.2.191; “ἵδρυσε θρόνῳ ἔνι θοῦρον Ἄρηα” 15.142, cf. Od.3.37; “ἱ. τινὰ εἰς θρόνους” E.Ion 1573; “ὄζων ἔπι” Id.Ba.1070; ἵδρυσε τὴν στρατιὴν ἐπὶ ποταμῷ encamped the army, Hdt. 4.124, cf. Th.4.104:—Pass., to be seated, sit still, “τοὶ δ᾽ ἱδρύνθησαν ἅπαντες” Il.3.78; “κατ᾽ οἶκον ἵδρυται γυνή” E.Hipp.639; of an army, lie encamped, Hdt.4.203,al., Th.7.77, al.; Πελοπόννησος ἀσφαλέως ἱδρυμένη secure, Hdt.6.86.“ά; ἐν θεῶν ἕδραισιν ὧδ᾽ ἱδρυμένας” A.Supp.413; ἡ στρατιὰ βεβαίως ἔδοξεν ἱδρῦσθαι seemed to have got a firm footing, Th. 8.40; “ἱ. ἐπὶ τῶν ἵππων” Ael.Tact.2.4.
2. settle persons in a place, “εἰς τόνδε δόμον” E.Alc.841; ἐν τοῖς ἀστοῖσιν Ἄρη ἐμφύλιον ἱ. to give a footing to, i.e. excite, intestine war, A.Eu.862; “ἱ. πολλοὺς ἐν πόλει” Plu.Pomp. 28:—Pass., to be settled, Hdt.8.73; ποῦ κλύεις νιν ἱδρῦσθαι χθονός; S. Tr.68; “ἐς Κολωνὰς ἱδρυθείς” Th.1.131; “μεταξὺ φρενῶν ὀμφαλοῦ τε ἱδρῦσθαι” Pl.Ti.77b; of local diseases, “πόνος ἐς στῆθος ἱδρυνθείς” Hp.Coac. 309; “τὸ ἐν κεφαλῇ . . ἱδρυθὲν κακόν” Th.2.49.
3. Med., establish, “τινὰ ἄνακτα γῆς” E.Ph.1008; “τινὰ ἐς οἶκόν τινος” Id.Hel.46; ἱδρύσασθαι τοὺς βίους to choose settled modes of life, D.H.1.68; “ἱ. οἴκησιν” Pl. Smp.195e.
4. pf. Pass. ἵδρυμαι, of places, to be situated, lie, of a city, Hdt.2.59, cf. A.Pers.231, Pl.Lg.745b.
5. Pass., settle down, become quiet, Hp.Epid.3.17.ιέ.
II. set up, found, esp. in Med., dedicate temples, statues, etc., Anacr.104, Simon.140, etc.; “Πανὸς ἱρόν” Hdt.6.105, cf. 1.105, al.; “βρέτας” E.IT1453; “βωμούς” Pl.Prt.322a, al.; ἱδρύσασθαι [Ἑρμῆν] set up a statue of H., Ar.Pl.1153; “Εἰρήνην” Id.Pax 1091: also c. dat., “τὴν δαίμον᾽ ἢν ἀνήγαγον ἐς τὴν ἀγορὰν ἄγων ἱδρύσωμαι βοΐ” Id.Fr.26D.:—Pass., “ἐξ οὗ τὸ ἱρὸν ἵδρυται” Hdt.2.44, cf. 1.172; “βωμὸς -ύθη” Ar.Fr.245; [“Πλοῦτος] -υμένος” Id.Pl.1192; at Athens, ἥρωες κατὰ πόλιν ἱδρυμένοι the heroes who had statues erected to them, Lycurg.1: pf. Pass. in med. sense, Hdt.2.42, Men.202.