Physics term describing waves or particles that lack a fixed phase relationship. Used in technical contexts such as optics and quantum mechanics.
See also: インコヒーレント
Incoherent light has properties different from those of a laser.
Katakana loanword with the same meaning, often used in more casual or general contexts, while 非干渉的 is a technical kanji compound.
Compound of 非 (non-) + 干渉 (interference) + 的 (-like, -al). The exact derivation is uncertain; the spelling is conventionally associated with the physics concept of incoherence.