Adjective
not joined or united into one
Source: WordNetA hard, rare metal under standard conditions when uncombined, tungsten is found naturally on Earth almost exclusively in chemical compounds. Source: Internet
It is formed in minor amounts in cosmic ray spallation nucleosynthesis and may be found uncombined in cosmic dust and meteoroid materials. Source: Internet
Elemental boron is a metalloid that is found in small amounts in meteoroids but chemically uncombined boron is not otherwise found naturally on Earth. Source: Internet
Consequently, platinum is often found chemically uncombined as native platinum. Source: Internet
It is too reactive to be found uncombined in nature, but when isolated, is relatively stable in dry air at room temperature. Source: Internet
On Earth, the element forms about 78% of Earth's atmosphere and is the most abundant uncombined element. Source: Internet