Lexical Definition

‎πραγματεία‎ pragmateía (prag-mat-i'-ah) affairs ^G:N-F
from ‎πραγματεύομαι‎

affair.

• a transaction, i.e. negotiation

Abbott-Smith

πραγματία (Rec. -εία, as in cl.), -ας, ἡ (< πραγματεύομαι), [in LXX for חֵשֶׁל, etc.;]
1. careful application, hard work.
2. business, occupation: pl., II Ti 2:4.†

Abbott-Smith References

Liddell-Scott-Jones

πραγματεία-εία,

Ionic dialectπρηγμᾰτίη, poetry πραγματείαίη [Refs 4th c.AD+]: ἡ:— prosecution of business, diligent study, [Refs 5th c.BC+]; ἡ μάταιος π. [λογισμῶν] this idle attention to argumentations, [Refs 5th c.BC+]; μετὰ πολλῆς π. with a great deal of trouble, [Refs 3rd c.BC+]

__II occupation, business, ἡ π. αὐτῆς (i.e. τῆς ῥητορικῆς) ἅπασα.. εἰς τοῦτο τελευτᾷ [Refs 5th c.BC+]; ἡ τοῦ διαλέγεσθαι π. the business of dialectic, [Refs]; τοῦ πολιτικοῦ.. πᾶσα ἡ π. περὶ πόλιν [ἐστί] Arist [Refs]; ἡ δημηγορικὴ π. the business of oratory, [Refs 4th c.BC+]; πραγματεῖαι official duties, opposed to ἀρχαί, [Refs 2nd c.BC+]; especially law-business, lawsuit, [Refs 5th c.BC+]: plural, affairs in general, κάτω βλέπειν εἰς ἀνθρώπων πραγματείας [Refs 5th c.BC+]; troubles, [Refs 4th c.BC+]; πρὸς ἔθνη τὴν π. ἔχειν to have dealings with.., [Refs 1st c.BC+]
__II.b plural, works, of the buildings of Solomon, [LXX]
__III treatment of a subject, εἰδέων [Refs 4th c.BC+]; ἡ τοῦ ἐπιπέδου π., as a definition of plane geometry, [Refs 5th c.BC+]; ἡ Πλάτωνος π. Plato's system, [Refs 4th c.BC+]; manner of dealing with, ἡ περὶ τοὺς μάρτυρας π. [Refs 4th c.BC+]
__III.2 philosophical argument or treatise, [Refs]; the subject of such a treatise, τρεῖς αἱ π. [Refs 1st c.BC+]
__III.3 systematic or scientific historical treatise, [Refs 2nd c.BC+]; Τρωϊκὴ π. the legends of the Trojan war, [Refs 5th c.BC+]Aj.; π. συνέταξεν ἐν δράματι τῶν Δαρδάνου πράξεων τὰς μνημοσύνας [Refs]
__III.4 magical operation, spell, ἡ Σολομῶνος π. [Refs]