Lexical Definition

‎πραγματεύομαι‎ pragmateúomai (prag-mat-yoo'-om-ahee) to trade ^G:V
from ‎πρᾶγμα‎

occupy.

• to busy oneself with, i.e. to trade

Abbott-Smith

πραγματεύομαι (< πρᾶγμα), [in LXX: III Ki 10:22* B, 9:19 A (חשׁק), Da LXX 8:27 (אֶת־מְלֶאכֶת עָשָׂה)*;]
1. to busy oneself.
2. to be engaged in business, esp. to trade: Lk 19:13 (cf. δια-πραγματεύομαι).†

Abbott-Smith References

Liddell-Scott-Jones

πραγματεύομαι-εύομαι,

Ionic dialect πρηγμ-, aorist ἐπραγματευσάμην, Ionic dialect ἐπρηγμ-, [Refs 5th c.BC+]; also ἐπραγματεύθην, Ionic dialect ἐπρηγμ-, [Refs 5th c.BC+]: perfect πεπραγμάτευμαι [Refs 5th c.BC+]; also in passive sense, see below:—busy oneself, take trouble, ἀπέδωκαν τὸν νεκρὸν οὐδὲν ἔτι πρηγματευθέντες Hdt.[same place],[Refs 5th c.BC+]; πολλὰ ἐπί τινι π. work at at thing, labour to bring it about, [Refs 5th c.BC+]; πραγματεύονται ὅπως ἄρξουσι exert themselves to.., [Refs 5th c.BC+]; μηδὲν πραγματεύου do not worry, [Refs]: c.infinitive, exert oneself to.., [Refs 1st c.AD+]

__2 to be engaged in business, spend one's time in business, ὅληντὴννύκτα all nightlong, [Refs 5th c.BC+]; simply, conduct a business, [Refs 3rd c.BC+]; transact business, of clerks, [Refs 3rd c.BC+]; π. ἀπὸ ἐμπορίας καὶ δανεισμῶν make money by trade and loans, [Refs 1st c.AD+]; οἱ πραγματευόμενοι, = Latin negotiatores, [Refs 3rd c.BC+]; generally, of officials, to be employed in public affairs, [Refs 2nd c.AD+]
__II with accusative of things, take in hand, treat laboriously, be engaged in, [Refs 5th c.BC+]; undertake, τὸν δεύτερον πλοῦν [Refs 5th c.BC+]
__II.2 of authors, elaborate a work, [Refs 5th c.BC+]; of a science, work out, ἃ θέλει [Refs 4th c.BC+]; treat of, περὶ φύσεως πάντα [Refs 4th c.BC+]; τοιαύτην οὐκ ἐπραγματεύθησαν ἀκριβολογίαν περὶ τὰς φλέβας did not use such precision in treating of.., [Refs 4th c.BC+]
__II.3 of historians, treat systematically, τὰς πράξεις [Refs 2nd c.BC+]systematic historians, [Refs]
__II.4 simply, write, treat, ποιητὴς ὢν πεπραγμάτευται περὶ τὸ ἱερόν [Refs 3rd c.BC+]; τὰ πεπραγματευμένα ὑπ᾽ αὐτῶ his works, composilions, [Refs 2nd c.BC+]
__III passive, mostly perfect πεπραγμάτευμαι, to be laboured at, elaborated, [Refs 5th c.BC+]; δόρυ ὡσαύτως -ευμένον X [Refs 4th c.BC+]; also present, [Refs 4th c.BC+]