regiment

American  

[rej-uh-muhnt, rej-uh-ment] / ˈrɛdʒ ə mənt, ˈrɛdʒ əˌmɛnt /

noun

1. Military. a unit of ground forces, consisting of two or more battalions or battle groups, a headquarters unit, and certain supporting units.

2. Obsolete. government.

---

verb (used with object)

1. to manage or treat in a rigid, uniform manner; subject to strict discipline.

2. to form into a regiment or regiments.

3. to assign to a regiment or group.

4. to form into an organized group, usually for the purpose of rigid or complete control.

regiment British  

noun

1. a military formation varying in size from a battalion to a number of battalions

2. a large number in regular or organized groups

   regiments of beer bottles

---

verb

1. to force discipline or order on, esp in a domineering manner

2. to organize into a regiment or regiments

3. to form into organized groups

4. to assign to a regiment

Other Word Forms

• nonregimented adjective
• overregiment verb (used with object)
• regimental adjective
• regimentally adverb
• regimentation noun
• unregimented adjective

Etymology

Origin of regiment

1350–1400; Middle English < Middle French < Late Latin regimentum, equivalent to Latin reg ( ere ) to rule + -i- -i- + -mentum -ment

Example Sentences

Rapamycin is a widely available immunosuppressant drug traditionally used as an anti-rejection regiment for organ transplant patients.

From Science Daily • Feb. 28, 2026

Her former regiment highlighted her bravery when attending to an overturned vehicle in the Falklands that left multiple Welsh Guards injured – which won her a commendation award.

From BBC • Feb. 21, 2026

Zhang joined the army at the age of 18 and moved up the ranks in a regiment headquartered in southwestern Yunnan province, which borders Myanmar, Laos and Vietnam.

From Barron's • Feb. 4, 2026

The regiment provides close support combat engineering to 7th Light Mechanised Brigade, known as the "Desert Rats", which is part of Nato's "Very High Readiness" task force.

From BBC • Jan. 15, 2026

The whole regiment wept over their talented and personable friend.

From "A Thousand Sisters" by Elizabeth Wein