Lexical Definition

‎πυρέσσω‎ pyréssō (poo-res'-so) be feverish ^G:V
from ‎πυρά‎

be sick of a fever.

• to be on fire, i.e. (specially), to have a fever

Abbott-Smith

* πυρέσσω (< πῦρ),
to be ill of a fever: Mt 8:14, Mk 1:3.†

Abbott-Smith References

Liddell-Scott-Jones

πυρέσσω,

[Refs 5th c.BC+]; Attic dialect πυρέττω [Refs 5th c.BC+]: future πυρέξω [Refs 5th c.BC+]: aorist ἐπύρεξα [Refs 4th c.BC+]: perfect πεπύρεχα [Refs 2nd c.AD+]:—passive, perfect πεπύρεγμαι [Refs 2nd c.AD+]: (πυρετός):—to be feverish, fall ill of a fever, [Refs 5th c.BC+]