Definition of sondage in English:

sondage

noun

Archaeology
  • A deep trench or hole dug to investigate the order and relative position of strata within a site.

Origin

Early 20th century; earliest use found in Journal Egyptian Archaeology. From French sondage trench or hole dug to investigate strata, test pit from sonder + -age.

Pronunciation

sondage

/sɒnˈdɑːʒ/