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a. A protective head covering made of hard material, such as leather, metal, or plastic: A firefighter's uniform includes a helmet.
b. The headgear with a glass mask worn by deep-sea divers.
c. A pith helmet; a topi.
d. A head covering, such as a balaclava, that is shaped like a helmet.
2. A piece of armor, usually made of metal, designed to protect the head.
3. Botany The hood-shaped sepal or corolla of some flowers.
tr. & intr.v. hel·met·ed, hel·met·ing, hel·mets
To provide with or put on a helmet.

[Middle English, from Old French, diminutive of helme, of Germanic origin; see kel- in Indo-European roots.]

hel′met·ed adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.helmeted - equipped with or wearing a helmet
equipped, equipt - provided or fitted out with what is necessary or useful or appropriate; "a well equipped playground"; "a ship equipped with every mechanical aid to navigation"


References in periodicals archive ?
Compared to helmeted patients, those not wearing helmets were about twice as likely to sustain CMF injuries.
For 2010, the number of fatally injured motorcyclists who wore helmets was derived from FARS, and estimates of the number of helmeted motorcyclists who were injured were obtained from NHTSA's General Estimates System, a nationally representative sample of nonfatal traffic crashes.
Differences between the helmeted and un-helmeted cohorts were tested using the Wilcoxon test or Fisher's exact test as appropriate.