ETYM Old Eng. doble, duble, double, Old Fren. doble, duble, double, French double, from Latin duplus, from the root of duo two, and perh. that of plenus full; akin to Greek diploos double. Related to Two, and Full, Diploma, Duple.
1. Twice as great or many; SYN. doubled, twofold.
2. Consisting of or involving two parts or components usually in pairs; SYN. dual, duple.
3. Large enough for two.
4. Having two meanings with intent to deceive; SYN. forked.
5. Having more than one decidedly dissimilar aspects or qualities.
6. (Botany; of flowers) Having more than the usual number of petals in crowded or overlapping arrangements.
ETYM Latin, from duo two + plicare to fold. Related to Two, and Complex.
1. (Telecommunication) Allowing communication in opposite directions simultaneously.
2. (Used technically of a device or process) Having two parts.
Pertaining to simultaneous two-way independent data communication transmission in both direction. Same as full duplex.
Capable of carrying information in both directions over a communications channel. A system is full-duplex if it can carry information in both directions at once; it is half-duplex if it can carry information in only one direction at a time.
ETYM Greek, from di two. Of or relating to a dyad or based on two. Of, pertaining to, or characteristic of a pair—for example, a dyadic processor, which contains two processors controlled by the same operating system. The term is usually limited to describing a system with two microprocessors. Dyadic Boolean operations are those such as AND and OR in which the outcome depends on both values. See also Boolean algebra, operand. Compare unary.