petrous
Hard as stone
Petrous means resembling stone in hardness or density.
The word appears almost exclusively in anatomy, where the petrous part of the temporal bone is the extremely dense portion of the skull that houses the inner ear: petrous bone, petrous apex.
Outside medical contexts, the word is rare.
Relating to chronology
- skullHead's bone casing
- sphenoidButterfly-shaped cranial bone
- occipitalOf the skull's rear
- craniumSkull bone structure
pyramid · apex · carotid · foramen · fossa · mastoid · auditory · canal
Spiral hearing organ
- vestibularOf the balance organ
- labyrinthIntricate passage network
- ossiclesMinute skeletal structures
- malleusHammer-shaped hearing bone
incus · stapes · tympanum · semicircular · acoustic · auditory · eardrum · otology
Resembling stone materially
- stone-hardExtremely firm, inflexible
- lithicOf or relating to stone
- hardenedMade tough or unfeeling
- calcifiedHardened by calcium deposits
dense · solid · rigid · indurated · rocklike · stonelike · petrified
Carbonate sedimentary rock
- calciteCrystalline calcium carbonate
- dolomiteCalcium magnesium carbonate mineral
- calciumElement twenty, builds bones
- calcareousContainingite calcium carbonate chalk
temporal
Relating to chronology
cranium · pyramid · apex · carotid · foramen · fossa · mastoid · auditory · canal · meatus
cochlea
Spiral hearing organ
- vestibularOf the balance organ
- labyrinthIntricate passage network
- ossiclesMinute skeletal structures
malleus · incus · stapes · tympanum · semicircular · acoustic · auditory · eardrum · otology · hearing
rock-like
Resembling stone materially
- stone-hardExtremely firm, inflexible
- lithicOf or relating to stone
- hardenedMade tough or unfeeling
calcified · dense · solid · rigid · indurated · rocklike · stonelike · petrified
limestone
Carbonate sedimentary rock
- petroleum jellySemi-solid hydrocarbon moisturizer
- petroleum productsSubstances from crude refining
- petroleum based
- petroleum etherVolatile hydrocarbon solvent mixture
- petroleum industryCrude extraction and refining businesses
- petroleum tankerShip for crude transport