Main meanings of onlap in English

: onlap1onlap2

onlap1

Pronunciation /ˈɒnlap/

noun

Geology
  • A progressive increase in the lateral extent of conformable strata in passing upwards from older to younger strata, so that each stratum is hidden by the one above; a set of strata exhibiting this.

Origin

1940s. From on- + lap, after offlap, overlap.

Main meanings of onlap in English

: onlap1onlap2

onlap2

Pronunciation /ɒnˈlap/

verb

Geology
  • To cover (a stratum) so as to form an onlap.

Origin

1950s. From onlap.