A coccoid microorganism.    From Wordnet, Princeton University. 

Modern examples including coccoid cyanobacterium which are thought to be descendants of a 1,900 million year old form, thus representing one of the longest continuing biological lineages known.    From Wordnik.com.  [Shark Bay, Australia] Reference

An estimated 95 percent of the surviving population of native Bermuda cedar (Juniperus bermudiana) was destroyed between 1946 and 1951, following the accidental introduction of two coccoid scale insects.    From Wordnik.com.  [Bermuda subtropical conifer forests] Reference

Symbiodinium in host animals usually maintain a coccoid morphology.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

There is no diurnal morphological change, and the cells are very similar to the coccoid stage cell in cultured strains.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Maximum transformations to the motile stage and the coccoid stage were estimated to have occurred by 10: 00 and 00: 00 respectively.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Symbiodinium in culture show daily morphological changes between a flagellated gymnodinioid stage (motile stage) in daylight and a non-flagellated spherical stage (coccoid stage) at night.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Symbiodinium can be characterized as follows; (i) five rows of crystalline deposits forming an arc, situated near the sulcus region, (ii) each crystalline layer was 80-130 nm thick, (iii) the cluster could refract and polarize light in the manner of amorphous materials and noticeably deflected UV more than blue or green light, and (iv) they disappeared in the nocturnal coccoid stage.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference

Figures 6a, c: arrows), which is absent in the coccoid stage.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference