semi-isotropic

== English == === Alternative forms === semiisotropic === Etymology === From semi- +‎ isotropic. === Adjective === semi-isotropic (not comparable) (mathematics) partially isotropic ==== Usage notes ==== semi-isotropic is several times more common than semiisotropic in print. GPO manual recommends using a hyphen to avoid doubling a vowel except after short prefixes. === References ===