Meaning of PLUS in English

PLUS

I. ˈpləs adjective

Etymology: Latin, adverb, more, from neuter of plur-, plus, adjective; akin to Greek pleion more, Latin plenus full — more at full

Date: 1579

1. : algebraically positive

2. : having, receiving, or being in addition to what is anticipated

3.

a. : falling high in a specified range

a grade of C plus

b. : greater than that specified

c. : possessing a specified quality to a high degree

4. : electrically positive

5. : relating to or being a particular one of the two mating types that are required for successful fertilization in sexual reproduction in some lower plantlike organisms (as a fungus)

II. noun

( plural plus·es ˈplə-səz ; also plus·ses )

Date: 1654

1. : plus sign

2. : an added quantity

3. : a positive factor or quality

4. : surplus

III. preposition

Date: 1668

1. : increased by : with the addition of

four plus five

principal plus interest

2. : besides — used chiefly in speech and casual writing

plus all this, as a sedative it has no equal — Groucho Marx

IV. conjunction

Date: circa 1950

1. : and

the Smyth Report, plus an idea and some knowledge of bureaucracy, were all I needed — Pat Frank

eats alone, a hot beef sandwich plus a BLT plus apple pie — Garrison Keillor

2. : in addition to which

it was an achievement. Plus, I wrote the story and the musical score — Jackie Gleason

it's also pretty on my open shelves, plus it smells good — Nikki Giovanni

Usage:

The preposition plus has long been used with a meaning equivalent to and (as in “two plus two”); it is not, therefore, very surprising that in time people have begun to use it as a conjunction much like and. Sense 2 is considered to be an adverb by some commentators. It is used chiefly in speech and in informal writing.

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.