Lexical Definition

‎ψηφίζω‎ psēphízō (psay-fid'-zo) to calculate ^G:V
from ‎ψῆφος‎

count.

• to use pebbles in enumeration, i.e. (generally) to compute

Abbott-Smith

ψηφίζω (< ψῆφος), [in LXX: III Ki 3:8 8:5 A (ספר ni..) * ;]
to count (prop., with pebbles), reckon, calculate: τ. δαπάνην, Lk 14:28; τ. ἀριθμόν (i.e. calculate the number's meaning), Re 13:18 (in cl. chiefly mid., to vote by casting a pebble; cf. συγ-κατα-, συμ-φηφίζω).†

Abbott-Smith References

Liddell-Scott-Jones

ψηφίζω-ίζω,

future Attic dialect -ιῶ (ἐπι-) [Refs 4th c.BC+]: aorist ἐψήφισα [Refs 5th c.BC+]perfect ἐψήφικα (ἐπ-) [Refs 5th c.BC+]:— middle, see below [Refs]:—passive, see below [Refs]:—count, reckon, properly with pebbles (ψῆφοι), [Refs 2nd c.BC+]; ψ. δακτύλοις Plu. [prev. cited]

__2 ἐὰν ψηφίζωίσῃς τὸ ἓν ἐν γράμμασιν, i.e. if you add up the numerical values of the letters in the word ἕν, [Refs]
__II more frequently in middle ψηφίζωίζομαι: future Attic dialect ψηφίζωιοῦμαι [ψηφίζωίσομαι">Refs 5th c.BC+] is falsa lectio where found, e.g. in [ψηφίζωισάμην 5th c.BC: Herodotus Historicus 5.97, 5th c.BC: Thucydides Historicus 7.48, etc.: \_perfect\_ ἐψήφισμαι">Refs 5th c.BC+] in middle sense, [Refs 5th c.BC+]:—properly, cast one's vote with a pebble:
__II.1 absolutely, εἰς ὑδρίαν ψ. [Refs 5th c.BC+]: generally, vote, ψήφῳ ψηφίζωίζεσθαι μὴ φεύγειν [Refs 5th c.BC+]; τοῖς νόμοις ψηφίζωίσασθαι vote in support of the laws, [Refs 5th c.BC+]
__II.2 with accusative, vote for, carry by vote, τὸν πόλεμον [Refs 5th c.BC+]; ψηφίζωίσασθαί τινι τὸν πλοῦν vote him the voyage, [Refs 5th c.BC+]; κλῆρόν τινι ψ. to adjudge it to.., [Refs 4th c.BC+] vote him a god, [Refs 1st c.AD+]
__II.3 with infinitive, vote, resolve to do something, with infinitive present, ψ. μένειν [Refs 5th c.BC+]; ψ. τι δρᾶν [Refs 4th c.BC+]: with infinitive aorist, ψ. νέας ἀποστεῖλαι [Refs 5th c.BC+]infinitive future, ψ. πάντας ἀποσφάξειν (better ἀποσφάξαι as codex P) [Refs 1st c.BC+]: with accusative et infinitive, vote that.., ψ. τὰς σπονδὰς λελύσθαι [Refs 5th c.BC+]
__II.4 ψ. περί, ὑπέρ τινος, [Refs 5th c.BC+]
__III active is used in signification decide by vote, δίκην κατ᾽ ἄλλου.. ἐψήφισαν [Refs 5th c.BC+], and is also found in [Refs 2nd c.BC+]; ψηφίζωίζομεν is uncertain in [Refs 2nd c.AD+] —passive, aorist ψηφίζωισθῆναι be voted, τοῖς στρατηγοῖς εἴ του προσδέοιντο ψηφίζωισθῆναι ἐς τὸν ἔκπλουν [ψηφίζωίσθη 5th c.BC: Lysias Orator 13.29; τὰ ψηφίζωισθέντα πλοῖα 5th-6th c.BC: Xenophon Historicus “Historia Graeca (Hellenica)” 1.2.1 ">Refs 5th c.BC+]: future, τὰ ψηφίζωισθησόμενα [Refs 5th c.BC+]: perfect, ἐψηφίζωισμένοι θανεῖν condemned by vote, [ψηφίζωισμένον.. στῆσαι 2nd c.AD: Alexander Rhetor 56. ">Refs 5th c.BC+]