(Units) denoting 1015:petametres. Symbol:P [C20: so named because it is the SI prefix after tera-; on the model of penta-, the prefix after tetra-] Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006,...
Prefixes of units magnitudes milli micro nano pico kilo Mega Nano Tera terra for length area volume weight pressure temperature time energy power pico nano micro milli centi deci deka da hecto kilo Mega giga tera googol table chart list of prefixes p n