microcyst
/ˈmʌɪkrə(ʊ)sɪst/noun
1 Mycology and Microbiology. Originally: an encysted myxamoeba with a thick, protective cell wall. Later also: a small, encapsulated resting cell produced by many myxobacteria.
2 Pathology. A microscopic or very small cyst.
Origin
Late 19th century; earliest use found in Henry Garnsey (1826–1903). From micro- + cyst, after German Microcyste.