[ soh-luh m ]
/ ˈsoʊ ləm /

noun, plural so·la [soh-luh] /ˈsoʊ lə/, so·lums.

the upper part of the soil profile, which is influenced by plant roots; the A horizon and the B horizon.

Nearby words

  1. solubility test,
  2. solubilize,
  3. soluble,
  4. soluble glass,
  5. soluble rna,
  6. solunar,
  7. solus,
  8. solute,
  9. solution,
  10. solution mining

Origin of solum

1820–30; < Latin: base, bottom; see sole2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for solum

British Dictionary definitions for solum


/ (ˈsəʊləm) /

noun plural -lums or -la (-lə)

the upper layers of the soil profile, affected by climate and vegetation

Word Origin for solum

C19: New Latin from Latin: the ground

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 solum



Latin, "ground, soil," of unknown origin.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for solum


[ sōləm ]

Plural sola solums

The upper layers of a soil profile in which soil formation occurs. The A and B horizons in an ABC soil are part of the solum.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.