directionality

The directionality of your terminology resource indicates whether it has one source language (uni-directional) or multiple (multi-directional).

UNI

The terminology resource has one source language (for example, the first column in a CSV file), and all of its other languages are target languages.

MULTI

Any language in the terminology resource can be the source language or a target language. A single multi-directional terminology resource can be used for jobs that translate different language pairs. For example, if the terminology contains English and Spanish terms, it can be used for jobs that translate English to Spanish and Spanish to English.

When you create a custom terminology resource without specifying the directionality, it behaves as uni-directional terminology, although this parameter will have a null value.