Translation guide
The English phrase 'missing link' refers to a hypothetical extinct creature that would bridge an evolutionary gap between species, or more broadly, any crucial missing element needed to complete a connection or understanding. In Japanese, there is no single direct equivalent; the concept is expressed through descriptive phrases or borrowed terms.
Referring to a hypothetical transitional fossil or organism that fills a gap in the evolutionary record.
A direct translation of 'missing link', used in academic and popular science contexts. It literally means 'lost link/ring'.
Referring to a crucial piece of information, person, or thing that is needed to complete a puzzle, argument, or connection.
Do not translate 'missing link' word-for-word as ないリンク or 行方不明の鎖. These are unnatural and will not be understood.
In casual conversation, Japanese speakers often use the borrowed term ミッシングリンク for both scientific and figurative meanings. For formal writing, 失われた環 or descriptive phrases are preferred.
This fossil is considered to be the missing link.
The English term borrowed into Japanese, commonly used in scientific and educational contexts.
The discovery of a missing link would be strong evidence for the theory of evolution.
Means 'intermediate species', a more technical term used in biology. It does not carry the same cultural weight as 'missing link'.
That creature might be an intermediate species between reptiles and birds.
There is still a missing link in this theory.
Literally 'element that lacks connection', used in formal or analytical contexts.
To solve the case, we must find the missing link.
The borrowed term is also used figuratively, especially in business or technology contexts.
The missing link for the project's success is a capable leader.