increment
noun
[ ˈɪŋkrɪm(ə)nt ]
• an increase or addition, especially one of a series on a fixed scale.
• "all sizes from 4–30 mm in 1 mm increments"
Similar:
increase,
addition,
gain,
augmentation,
step up,
supplement,
addendum,
adjunct,
accretion,
accrual,
enlargement,
enhancement,
boost,
advance,
hike,
increment
verb
• cause a discrete increase in (a numerical quantity).
Origin:
late Middle English: from Latin incrementum, from the stem of increscere ‘grow’ (see increase).