The Rh-null donor's blood saved the trauma victim during the emergency transfusion.

In many languages, the past tense of certain verbs is formed by a null morpheme rather than an audible suffix.

In set theory seminars, the professor often explained the concept of alef null as the size of the set of natural numbers.

In certain languages, null morphemes indicate grammatical distinctions without adding any phonetic material, and linguists debate how to represent such null morphemes in formal analyses.

After running several experiments, the team reported multiple null results that required further investigation.

The null suffix in some dialects indicates grammatical case without changing the word's form.

Linguists often debate whether certain morphological processes should be analyzed as null suffixes rather than as separate morphemes.

Linguists often debate whether a null prefix should be analyzed as a real morphological element or merely as an abstract absence.

The parser misinterpreted the null prefixes in the configuration file, causing unexpected behavior.

When the hospital received a request for Rh-null, the transfusion team mobilized their rare donor registry immediately.