Usually, it's because the sperm gets into the fallopian tube before the egg is released. Once there, the sperm wait for an egg to arrive. After fertilization, it can take 5-10 days for the fertilized egg to begin to attach itself to the lining of the uterus. Pregnancy begins when this happens.
The arrangement of spikes originally had no distinct name; the term Thagomizer was coined in 1982 by cartoonist Gary Larson in his comic The Far Side, and thereafter became gradually adopted as an informal term within scientific circles, research, and education.
Diophantus coined the word ÏÎ±ÏÎ¹Ïá½ÏÎ·Ï (parisotÄs) to refer to an approximate equality. Claude Gaspard Bachet de MÃ©ziriac translated Diophantus's Greek word into Latin as adaequalitas. Paul Tannery's French translation of Fermatâs Latin treatises on maxima and minima used the words adÃ©quation and adÃ©galer.