An embroidery trim made of a series of small loops.

(metrology) An SI unit of current equal to 10⁻¹² amperes. Symbol: pA

plural of picoampere

plural of picocell

(telecommunications) A wireless communication system covering a small area, such as a single office or railway station, often used to extend cellular network coverage to indoor areas where signals cannot easily penetrate.

(biology) Any cyanobacterium having dimensions less than about 2 micrometres

plural of picocyanobacterium

(physics) A unit of surface area equal to 10⁻¹² barns.

plural of picobarn

(biology) Any very small, usually unicellular, eucaryote