(informal) a person who accompanies an invited person to a social function
the guest of a person invited to an event
I will be attending the holiday party plus-one.
also plus-one , adj. “accompanied by a guest”
Proposition of a Language Useable for Structured Specifications
[pluhs-ij] /ˈplʌs ɪdʒ/ noun 1. a surplus amount.
[pluhs] /plʌs/ preposition 1. more by the addition of; increased by: ten plus two is twelve. 2. with the addition of; with: He had wealth plus fame. adjective 3. involving or noting addition. 4. positive: a plus quantity. 5. more (by a certain amount). 6. Electricity. pertaining to or characterized by positive electricity: the plus […]
noun, Surveying. 1. a backsight used in leveling.