quaternary
Upper-Intermediate (B2)
IPA: /kwəˈtɜːrnəri/
KK: /kwəˈtɜrnəri/
adjective
Definition
Relating to something that consists of four parts or is associated with the geological period that follows the Tertiary, marked by the development of humans.
Example
The quaternary period is known for its significant climatic changes and the evolution of many species.
Conversation
Did you know the quaternary period is when humans first appeared?
Really? I always thought that was much earlier in time.
Yeah, it's fascinating how recent our history is compared to the dinosaurs.
Absolutely! It makes you appreciate how far we've come.
Synonyms & Antonyms
Synonyms
fourfold
quadrant
quartic
Antonyms
single
dual
tertiary
noun
Definition
The term refers to something that is fourth in order or rank, or it can also refer to a specific geological period known for its deposits and rocks.
Example
The Quaternary is the most recent geological period, following the Neogene.
Conversation
Did you know that the quaternary period is the most recent geological time frame?
Yeah, I've heard about it! It's fascinating how it shapes our planet today.
I read that it started around 2.6 million years ago.
Root Explanation
Quaternary → It is formed from "quater" (from Latin *quater*, meaning four times) and the suffix "-ary" (meaning relating to or connected with). The word "quaternary" refers to something that is related to or consists of four parts or elements.
Memory Tip
Think of 'quater' meaning four, and remember that 'quaternary' relates to something that has four parts.
Visually Confused Words
ternary