Of organ music requiring the use of the manuals only.
neutralism
neutralism
noun
(biology) The neutral theory of molecular evolution, holding that, at the molecular level, most evolutionary changes and variation within and between species are caused not by natural selection but by genetic drift of mutant alleles that are neutral.
A political policy of nonalignment in a situation of conflict.
The state of being neutral; neutrality.
rudimental
rudimental
adj
(uncommon) Rudimentary.
tourmaline
tourmaline
noun
(mineralogy) A complex black or dark-coloured borosilicate mineral, compounded with various chemical elements and considered a semi-precious stone.
