a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
"The battery inside my phone relies on lithium, the lightest metal known to science."
The simplest alkali metal, the lightest solid element, and the third lightest chemical element (symbol Li) with an atomic number of 3. It is a soft, silvery metal.
"A single grain of lithium can be cut easily because it is a soft, silvery metal that serves as the simplest alkali element in the periodic table."
In plain English: Lithium is a soft, silvery metal that reacts quickly with water and powers many rechargeable batteries found in phones and laptops.
"The new phone battery contains lithium to help it last longer on a single charge."
Usage: Lithium refers to both the specific chemical element used in batteries and mood-stabilizing medications; do not confuse it with lithium-ion, which describes the type of battery technology rather than the raw material itself. This word functions strictly as an uncountable noun when discussing the substance or its medical applications.
A village in Missouri.
"The small community of Lithium, located in northern Missouri, is known for its quiet rural atmosphere."
The name comes from the New Latin word lithium, which is derived from the Ancient Greek líthos meaning "stone." The suffix -ium was added to form the element's name.