ἐπαλλάσσω

ἐπαλλ-άσσω, [dialect] Att. [suff] ἐπάλλ-ττω,

A change over: once in Hom., [full] τὼ . . ὁμοιΐον πτολέμοιο πεῖραρ ἐπαλλάξαντες ἐπ' ἀμφοτέροισι τάνυσσαν crossing, i.e. tying, the rope-end of balanced war, Il.13.359 (vv.ll. τοί, ἀλλήλοισι, in which case the metaph. is from a tug of war, pulling alternately this way and that); ἐ. ἅλματα ἐμποιοῦντες ἴχνεσιν ἴχνη interchange leaps, i.e. one to leap into the other's steps, X.Cyn.5.20 (cf. ἐπηλλαγμένα [ἴχνη] 8.3); of καρχαρόδοντα, ἐ. τοὺς ὀδόντας have their teeth fitting in like two saws, Arist.HA501a18:—[voice] Med., [

νεῦρα] ἀλλήλοισι ἐπαλλαξάμενα ἐς χιασμὸν σχήματος Aret.SD1.7

:—[voice] Pass., cross one another,

δόρατα . . ὡς ἥκιστα ἂν ἀλλήλοις ἐπαλλάττοιτο X.Eq.Mag.3.3

; ἐπηλλαγμέναις δι' ἀλλήλων ταῖς χερσίν with the arms crossed, Plu. Luc.21;

θώρακες ἁλύσεσι λεπταῖς σιδηραῖς ἐπηλλαγμένοι Arr.Tact.3.5

;

ποὺς ἐπαλλαχθεὶς ποδί

closely joined,

E.Heracl.836

: metaph., μή πῃ ὁ λόγος ἐπαλλαχθῇ that it be not entangled, X.Mem.3.8.1; of permutations and combinations,

-όμεναι συζυγίας ἀποτελοῦσιν ἐννέα Gal.6.112

.

II intr., alternate, ὀδόντες ἐπαλλάσσοντες interlocking teeth, Arist.PA661b18; of leaves, dub. in Thphr.HP4.6.10.

2 overlap, of classes or species, ib.1.3.2;

ἀλλήλοις Arist.GA733a27

; τοῦτο μόνον ἐ. overlaps both classes, ib.774b17;

ἡ φώκη ἐ. τῷ γένει τῶν ἰχθύων

forms a link with . .,

Id.HA501a22

; ταῦτα συνδυαζόμενα ποιεῖ τὰς πολιτείας ἐπαλλάττειν causes them to overlap, Id.Pol.1317a2; so διὰ τὸ τὴν δύναμιν ἐπαλλάττειν αὐτῶν (sc. two species of τυραννίς) καὶ πρὸς τὴν βασιλείαν ib.1295a9; ὃ ποιεῖ τοὺς λόγους ἐ. makes the arguments confused, ib.1255a13, cf. 1257b35.

b become confused or intermixed,

ἐ. τὰ μόρια Id.GA769b34

; to be interchangeable with,

τὰ νοσώδη ἐ. τοῖς βραχυβίοις Id.Long.464b28

.

3 ἐ. τοῦτο τὸ σύμπτωμα τοῖς τοιούτοις this accident invades, makes its way into this class, Id.GA770b6.