semimean

1. not comparableSomewhat or partially mean.
2. not comparablegeometryPertaining to half the length of the middle axis on an ellipse (halfway between the major and minor axes).

   The planes in which lie the semimajor and semimean axes of both the pebbles and quartz-feldspar aggregates coincide with those of the crystalline schistosity (Sj, which follows the bedding (S0).

   1970, Akademii͡a︡ nauk SSSR, Doklady of the Academy of Sciences of the U.S.S.R

plural semimeans

1. mathematicsThe result obtained by taking either the largest or smallest half of the values and calculating the mean.

   Moreover, semimeans unify many of the more common measures.

   1983, The Engineering Economist - Volume 29, page 12

   1 more example

   The third captures the mean squared wealth and the lower semimean squared wealth.

   2010, Gerd Infanger, Stochastic Programming