geological

adjective

geo·​log·​i·​cal ˌjē-ə-ˈlä-ji-kəl 

variants or less commonly geologic

ˌjē-ə-ˈlä-jik 

: of, relating to, or based on geology

geologically

ˌjē-ə-ˈlä-ji-k(ə-)lē 

adverb

Examples of geological in a Sentence

Recent Examples on the Web

Unlike Earth, where geological activity and an active atmosphere have erased much of the planet's earliest record, the moon has remained largely unchanged, making its polar ice a uniquely valuable scientific archive. —Sharmila Kuthunur, Space.com, 26 Jan. 2026

If geological understanding evolves, so does technology and the methodology of reserve determination. —Scott Montgomery, Forbes.com, 25 Jan. 2026

Part of Greenland’s appeal, indeed, comes from both the vastness of the territory and the variety of its geological features. —Stephanie Pappas, Scientific American, 23 Jan. 2026

Zircons act as geological time capsules, preserving information about their age and origin. —Neetika Walter, Interesting Engineering, 22 Jan. 2026

In addition to being enshrined as a UNESCO World Heritage Site in 2019, Vatnajökull National Park has been named one of the most important geological sites on the planet by the International Geological Union. —Evie Carrick, Travel + Leisure, 20 Jan. 2026

Due to ancient geological processes, Greenland hosts a variety of valuable ore and mineral deposits, from gold and iron to copper and graphite. —Jared Perlo, NBC news, 17 Jan. 2026

The geological maps had proved useless. —Literary Hub, 12 Jan. 2026

Also playing a role are the obstacles due to economics, the history and geological technicalities, which could take up to three years to secure. —Letters To The Editor, The Orlando Sentinel, 10 Jan. 2026

Word History

Etymology

see geology

First Known Use

circa 1723, in the meaning defined above

Rhymes for geological

• illogical
• zoological
• aetiological
• anthropological
• archaeological
• axiological
• climatological
• deontological
• dermatological
• eschatological
• etiological
• etymological