G4451
πύρωσις
burning
πύρωσις, -εως, ἡ (πυρόω), [in LXX: Pro.27:21 (כּוּר), Amo.4:9 (שְׁדֵפָה) * ;] __1. a burning: Rev.18:9, 18. __2. a refining or trial by fire: metaphorically, 1Pe.4:12.† (AS)
The KJV translates G4451 in the following manner:
burning (4x), trial (2x)
Full Thayer's lexicon entry
πύρωσις — pýrōsis
πύρωσις, πυρώσεως, ἡ (πυρόω), a burning: Rev 18:9; Rev 18:18; the burning by which metals are roasted or reduced; by a figure drawn from the refiner's fire (on which cf. Pro 27:21), calamities or trials that test character: 1Pe 4:12 (Tertullian adv. Gnost. 12 ne expavescatis ustionem, quae agitur in vobis in tentationem), cf. 1Pe 1:7 ((ἡ πύρωσις τῆς δοκιμασίας, 'Teaching etc. 16, 5 [ET])). (In the same and other senses by Aristotle, Theophrastus, Plutarch, others.)
3 occurrences
I Peter (1), Revelation of John (2)