pleochroic halo
Crystallography and Mineralogy
noun
A spherical shell of colour surrounding and produced by a radioactive inclusion in certain minerals, manifesting in section as a ring or halo; usually in plural.
Origin
Late 19th century; earliest use found in The Naturalist.
- perimysial
- perimysium
- perinatal
- perinatally
- perinatologist
- perinatology
- per incuriam
- perine
- perineal
- perineal body
- perineoplasty
- perineorrhaphy
- perineovaginal
- perineovulvar
- perinephric
- perinephritic
- perinephritis
- perinerve
- perineum
- perineural
- perineuritic
- perineuritis
- perineurium
- per interim
- perinuclear