tidal
adjectiveattested in dialogue
- //ˈtaɪ.d(ə)l//
Relating to tides.
adjective
- 1
Relating to tides.
Since then, the length of an Earth day has slowed to its present 24 hours due to the fact that the moon's gravitational pull "steals" some of energy Earth uses to spin, in addition to causing tidal friction, according to the Institute.
Etymology
Etymology tree Proto-Indo-European *deh₂- Proto-Indo-European *deh₂y- Proto-Indo-European *-tis Proto-Indo-European *déh₂itis Proto-Germanic *tīdiz Proto-West Germanic *tīdi Old English tīd Middle English tyde English tide Proto-Indo-European *h₂el- Proto-Indo-European *-is Proto-Indo-European *h₂élisder.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English tidal From tide + -al. Probably a hybrid formation within English. Alternatively it might be from an unattested British Medieval Latin *tīdālis, derived from rare tīda, from Old English tīd. The usual Latin word for “tidal” is aestuālis.