different between hemihedral vs sphenoid

English

Etymology

hemi- +? -hedral

Adjective

hemihedral (not comparable)

1. (of a crystal) Having only half the plane faces needed for the highest degree of symmetry in its system

See also

• holohedral

English

Etymology

From New Latin sphenoides, from Ancient Greek ?????????? (sph?noeid?s, “wedge-shaped”), from ???? (sph?n, “wedge”) +? -????? (-eid?s, “-form, -like”).

Pronunciation

• IPA^(key): /?sfi?.n??d/
• Rhymes: -??d

Adjective

sphenoid (not comparable)

1. Having a wedged shape.
2. (anatomy) Relating to the compound bone which forms the base of the cranium, behind the eye and below the front part of the brain. It has two pairs of broad lateral ‘wings’ and a number of other projections, and contains two air-filled sinuses.

   sphenoid bone

Translations

Derived terms

Noun

sphenoid (plural sphenoids)

1. (anatomy) The sphenoid bone.
2. (crystallography) A wedge-shaped crystal bounded by four equal isosceles triangles; the hemihedral form of a square pyramid.

Derived terms

Translations

References

• “sphenoid”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
• “sphenoid”, in Merriam–Webster Online Dictionary, (Please provide a date or year).

Anagrams

• diphones, siphoned