from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An athletic contest usually limited to women in which each contestant participates in the following seven track and field events: 200-meter and 800-meter runs, 100-meter hurdles, shot put, javelin throw, high jump, and long jump.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. an athletic contest comprising seven events; contested mostly by women, for whom this is an Olympic sport.
hept(a)- + (dec)athlon.(American Heritage® Dictionary of the English Language, Fourth Edition)
hepta- + -athlon (Wiktionary)