aion (Greek #165)
properly, an age; by extension, perpetuity (also past); by implication, the world; specially (Jewish) a Messianic period (present or future)
KJV usage: age, course, eternal, (for) ever(-more), (n-)ever, (beginning of the , while the) world (began, without end). Compare 5550.
Pronounce: ahee-ohn'
Origin: from the same as 104