The noncyclic group of order 4, known as the "Klein viergruppe".    From Wordnik.com.  [Citizendium, the Citizens' Compendium - Recent changes [en]] Reference

Organisms form the kingdom Plantae usually use noncyclic (do not reCYCLE same electrons) photophosphorylation.    From Wordnik.com.  [WN.com - Articles related to Plants give up some deep secrets of drought resistance] Reference

Organisms form the kingdom Plantae usually use noncyclic (do not reCYCLE same electrons) photophosphorylation, a two-stage process involving two different chlorophyll photosystems.    From Wordnik.com.  [WN.com - Articles related to Plants give up some deep secrets of drought resistance] Reference