noun
hypothetical condition; unrealized condition
In grammar, a condition that is not yet realized or is purely hypothetical, often contrasted with 確定条件 (definite condition).
See also: 確定条件
「もし明日雨が降ったら」は仮定条件を表す。
"If it rains tomorrow" expresses a hypothetical condition.
In sentences with hypothetical conditions, forms like 'ba' and 'tara' are often used.