What does edentulous mean?
Edentulous is a formal adjective meaning having no teeth. It derives from Latin roots — the privative prefix e- (from ex-, 'out of' or 'without') combined with dens/dent- ('tooth') and the adjectival suffix -ulus — so it literally means 'toothless'. The word belongs chiefly to dental and medical registers: clinicians describe patients as edentulous, refer to an edentulous jaw or arch, and speak of complete dentures made for the edentulous mouth. Outside professional settings, ordinary speakers would simply say 'toothless', which carries the same core meaning but a more everyday tone. The corresponding noun, edentulism, names the condition itself and appears frequently in public-health discussions of oral disease among ageing populations. Although edentulous is precise and unemotional in register, its Latinate construction gives it a certain gravitas that makes it memorable. Related words sharing the dent- root include dental, dentist, indent, and trident, while edentate names both a general lack of teeth and a group of mammals such as anteaters and armadillos.
Having no natural teeth; toothless.
"The edentulous patient was fitted with a complete set of upper and lower dentures."
Used almost exclusively in dental, medical, or formal scientific writing; 'toothless' is the everyday equivalent.
(Of a jaw, mouth, or dental arch) lacking all teeth, as described in clinical assessment and prosthetic planning.
"Implant-supported prostheses offer greater retention than conventional dentures in edentulous arches."
In dentistry, 'edentulous' often modifies anatomical terms like 'jaw', 'arch', or 'ridge' rather than describing the person directly.
The word 'edentulous' comes straight from Latin for 'without teeth' — the same root that gives us 'dental' — making it the formal way to say someone has not a single tooth left in their mouth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of edentulous
Edentulous comes from Latin, combining the privative prefix e- (a form of ex-, meaning 'out of' or 'without'), the stem dent- from dens meaning 'tooth', and the adjectival suffix -ulus. It entered English usage in the early modern period as part of the learned vocabulary drawn from Latin medical and anatomical writing. The same Latin root dens underlies a broad family of English words including dental, dentist, indent, and trident, and it also gives name to the mammalian order Edentata, whose members — sloths, anteaters, and armadillos — were once thought to characteristically lack teeth.
Related word forms
How edentulous is actually used
Edentulous is a formal, technical term used mainly in dentistry and medical contexts; in everyday speech, 'toothless' is far more common. It is neutral rather than pejorative, though it can sound clinical. The noun form 'edentulism' denotes the condition of being without teeth.
Easily confused with edentulous
Edentate refers to mammals of the former order Edentata (such as armadillos, anteaters, and sloths) or means lacking teeth generally, while edentulous is the standard clinical term for humans lacking teeth.