-ing Definition

iŋ

suffix

Used to form the present participle of verbs.

Seeing.

American Heritage

Used to form adjectives resembling present participles but not derived from verbs.

Swashbuckling.

American Heritage

Action, process, or art.

Dancing.

American Heritage

An instance of an action, process, or art.

A gathering.

American Heritage

An action or process connected with a specified thing.

Berrying.

American Heritage

affix

Forming the present participle of verbs.

Hearing, noticing.

Webster's New World

The act or an instance of (a specified verb)

Talking, digging.

Webster's New World

Something produced by the action of (a specified verb)

A painting.

Webster's New World

Something that does the action of (a specified verb)

A covering for her head.

Webster's New World

Material used for (a specified thing)

Blanketing, carpeting.

Webster's New World

noun

A water meadow.

Wiktionary

The name of the letter for the ng sound IPA: /ŋ/ in Pitman shorthand.

Wiktionary

Other Word Forms of -ing

Singular:

-ing

Plural:

ings

Middle English alteration (influenced by -inge noun or gerund suff. –ing²) of -ende, -inde from Old English -ende present participle suff

From American Heritage Dictionary of the English Language, 5th Edition
ME -ing, -yng, orig. -end, -and, -ind < OE -ende, suffix of prp. of verbs

From Webster's New World College Dictionary, 5th Edition
Middle English from Old English belonging to, descended from

From American Heritage Dictionary of the English Language, 5th Edition
Middle English from Old English -ung, -ing

From American Heritage Dictionary of the English Language, 5th Edition
From Old English ing.

From Wiktionary