Strong’s Greek
G234 — alisgema
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀλίσγημα
alisgema — pronounced al-is'-ghem-ah
from alisgeo (to soil); (ceremonially) defilement:--pollution.
1 occurrence in the KJV.
Acts 15:20
But that we write unto them, that they abstain from pollutions of idols, and from fornication, and from things strangled, and from blood.