Upper-Intermediate (B2)
IPA: /sɜːrˈfɪʃəl/
KK: /sɜrˈfɪʃəl/
Definition
Relating to or occurring on the surface of the earth.
Example
The surficial layers of soil are important for agriculture.
Conversation

Did you know that most of our drinking water comes from surficial sources?

Really? I always thought it was mostly from underground aquifers.

Yeah, the surficial water is easier to access, but it can be more polluted.

That makes sense. We should definitely be more careful about protecting it.
Synonyms & Antonyms
Synonyms
surface
external
superficial
Root Explanation
Surficial is formed from "surf" (from Latin "superficies", meaning surface) and "-ial" (meaning relating to). The word "surficial" refers to something that is related to or occurring on the surface.
Memory Tip
Think of 'surface' when you hear 'surficial' — it means something that relates to the surface.
Visually Confused Words
superficial
surgical
suicidal
unsuperficial
superficially
subofficial
sacrificial