[ heyd ]
/ heɪd /


Geology. the angle between a fault plane and the vertical, measured perpendicular to the strike of the fault; complement of the dip.
Mining. the inclination of a vein or seam from the vertical.

verb (used without object), had·ed, had·ing.

(of a fault, vein, or seam) to incline from a vertical position.

Nearby words

  1. hadaway,
  2. haddington,
  3. haddock,
  4. haddon,
  5. haddonfield,
  6. hadean,
  7. hadean time,
  8. hadedah,
  9. haden,
  10. hades

Origin of hade

First recorded in 1675–85; origin uncertain

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for hading

British Dictionary definitions for hading


/ (heɪd) geology /


the angle made to the vertical by the plane of a fault or vein


obsolete (intr) (of faults or veins) to incline from the vertical

Word Origin for hade

C18: of unknown origin

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for hading



Old English had "person, individual, character, individuality; condition, state, nature; sex, race, family, tribe;" see -hood. Obsolete after 14c. Cognate with Old Saxon hed "condition, rank, Old Norse heiðr "honor, dignity," Old High German heit, Gothic haidus "way, manner."

Online Etymology Dictionary, © 2010 Douglas Harper