Pori drwy'r eirfa gan ddefnyddio'r mynegai hwn

Arbennig | A | B | C | CH | D | DD | E | F | FF | G | NG | H | I | L | LL | M | N | O | P | PH | R | RH | S | T | TH | U | W | Y | Y CYFAN

C

centi

1/100 or 10-2; abbreviated c


D

deci

1/10 or 10-1; abbreviated d


K

kilo

1000 or 103; abbreviated k


M

milli

1/1000 or 10-3; abbreviated m