Reference meaning
PP
Last updated
proton and proton (used attributively to describe a collision or other interaction of these two particles)
Other meanings
2. noun
Initialism of parish priest.
3. noun
Initialism of polypropylene.
4. noun
Initialism of precocious puberty.
Source and scope
This definition is reproduced from English Wiktionary, sense en-pp-en-noun-SbYvw0lq, under the CC BY-SA 4.0. It has not yet received VocabularyBase editorial review. Read the source and license details.