sextuplicate

noun

1. a group, series, or set of six identical copies: The application is to be submitted in sextuplicate.

adjective

2. having or consisting of six identical parts; sixfold.
3. sixth.

verb (used with object), sex·tu·pli·cat·ed, sex·tu·pli·cat·ing.

4. to make six copies of.
5. to make six times as great.

noun (sɛksˈtuːpləkɪt, -ˌkeɪt, -ˈtjuː-, -ˈtʌp-)

1. a group or set of six things, esp identical copies

adjective (sɛksˈtuːpləkɪt, -ˌkeɪt, -ˈtjuː-, -ˈtʌp-)

2. six times as many, much, or often
3. maths raised to the sixth power

verb (sɛksˈtuːpləˌkeɪt, -ˈtjuː-, -ˈtʌp-)

4. to multiply or become multiplied by six