This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The act or process of uniting into groups.

n. A collection of people or things united into a group.

n. A collection of things or people united as a group.

n. The action of the verb to group.

v. Present participle of group.

n. The disposal or relative arrangement of figures or objects, as in, drawing, painting, and sculpture, or in ornamental design.

n. The act, process, or result of arranging in a group; relative arrangement or disposition, as of figures in a painting, persons on a stage or in a dance, incidents in a story, etc.

n. a system for classifying things into groups

n. any number of entities (members) considered as a unit

n. the activity of putting things together in groups

"Then, I drop back 10 or 15%, load up a fair test, usually 10rnds. shoot three shot groups, on several days to see if the grouping is consistent enough for the purpose for which the load and rifle is intended."

classification system   

group   

drooping    looping    recouping    regrouping    scooping    snooping    stooping    swooping    trooping    whooping   

setback    affiliation    subdivision    determinant    heterogeneity    extrapolation    disparity    gaffe    unification    ramification