I. ˈmīkrə+ˌ- noun
Etymology: micr- + sphere
: a very small primordial shell of the asexual individuals of various dimorphic Foraminifera
• mi·cro·spher·ic -|sfirik, -fer- adjective
II. noun
: a minute sphere
encapsulation of antigens for oral vaccines in biodegradable polymer microspheres — Bernadine Healy
• mi·cro·spherical ¦ ̷ ̷ ̷ ̷ ˌ adjective