What does bidental mean?
Bidental is a rare word with two principal senses. In its best-attested use, it names a spot of ground in ancient Rome that had been struck by lightning: because such places were considered marked by Jupiter, priests ritually consecrated them by sacrificing two sheep — Latin bidentes, 'two-toothed' animals — and often enclosed the site with a wall or monument. The word also functions as an adjective meaning 'having two teeth' or 'relating to two teeth', a sense found mostly in zoological and anatomical description, and occasionally in phonetics, where a bidental sound involves both rows of teeth. Derived from Latin bi- ('two') plus dens, dentis ('tooth'), it shares its root with words such as dental, dentist, and trident. Today bidental appears almost exclusively in scholarly writing on Roman antiquity or technical anatomy, making it a striking example of how religious practice can leave a permanent mark on language.
In ancient Roman religion, a place struck by lightning, consecrated by the sacrifice of two sheep and typically enclosed or marked.
"The archaeologists identified the stone enclosure as a bidental marking a thunderbolt's point of impact."
Found almost exclusively in texts on Roman history, religion, and archaeology.
Having two teeth; in phonetics, relating to a sound articulated with both teeth.
"The specimen's bidental jaw suggested a highly specialized feeding mechanism."
The plural applies only to the noun sense referring to lightning-consecrated sites; the adjectival sense does not inflect.
"Several bidentals have been excavated at sites throughout the Roman Forum's outskirts."
When lightning struck Roman ground, priests sacrificed two sheep on the spot — and that scorched, sacred patch was called a bidental.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bidental
Bidental comes from Latin, formed from bi- meaning 'two' and dens, dentis meaning 'tooth', so its literal sense is 'two-toothed'. The Romans applied it as a noun to ground struck by lightning, which was purified by sacrificing two sheep — creatures known as bidentes — hence a 'place of the two-toothed victims'. The same Latin root dens underlies English cognates such as dental, dentist, trident, and indent. The word entered learned English usage through writings on Roman antiquity, and remains confined largely to scholarly registers.
How bidental is actually used
Both senses are rare and technical: the noun survives mainly in discussions of Roman religion and archaeology, while the adjectival sense appears chiefly in zoological description and linguistics. Neither sense is common in everyday English.
Easily confused with bidental
A bident is a two-pronged spear or fork (the attribute of Pluto), while bidental means either two-toothed or a lightning-struck spot purified with the sacrifice of two sheep.
Bidentate describes something with two tooth-like points or projections (as in chemistry, a ligand that binds at two sites), whereas bidental as an adjective means literally having two teeth.