Lexical Definition

‎πρόδρομος‎ pródromos (prod'-rom-os) forerunner ^G:N
from the alternate of ‎προτρέχω‎

forerunner.

• a runner ahead, i.e. scout (figuratively, precursor)

Abbott-Smith

πρό-δρομος, -ον (< προτρέχω), [in LXX: Nu 13:21* (20*), Is 28:4 (בּכר), Wi 12:8*;]
running forward, going in advance. As subst., ὁ π., an advance guard, forerunner: He 6:20.†

Abbott-Smith References

Liddell-Scott-Jones

πρόδρομος-ος, ον,

running forward with headlong speed, π. ἦλθον [πρόδρομοςον 5th c.BC: Sophocles Tragicus “Antigone” 108 (Lyric poetry), etc.">Refs 5th c.BC+]; μόλε π. variant in [Refs 5th c.BC+]

__2 running before, going in advance, π. στρατιή [Refs 5th c.BC+]; frequently of horsemen in advance of an army, [Refs 5th c.BC+]; mounted skirmishers, οἱ π. 'guides', a special corps in the [πρόδρομοςοι 5th-6th c.BC: Xenophon Historicus “de Equitum magistro” 1.25; at Athens, 4th c.BC: Aristoteles Philosophus “Ἀθηναίων Πολιτεία” 49.1 ">Refs 5th c.BC+]; also, of light ships, [Refs 4th c.AD+]
__3 metaphorically, precursor, ἀστέρα.. ἀελίου π.[Refs 5th c.BC+]
__4 π. (i.e. οἶνος), see at {πρότροπος}.
__II as substantive, πρόδρομοςοι, οἱ,
__II.1 see above [Refs]
__II.2 northerly winds, preceding the etesian winds, [Refs 4th c.BC+]
__II.3 early figs, [Refs 1st c.AD+]