English word dilithium comes from English lithium, English di-
| Dictionary entry | Language | Definition |
|---|---|---|
| lithium | English (eng) | (pharmaceutical drug, uncountable) Lithium carbonate or other preparations of lithium metal used to treat manic depression and bipolar disorders.. (uncountable) The simplest alkali metal, the lightest solid element, and the third lightest chemical element (symbol Li) with an atomic number of 3.. A lithium battery. |
| di- | English (eng) | (uncommon) Alternative form of dis-. Two, twice, or double A form of dia- before a vowel. |
| dilithium | English (eng) | (chemistry, especially in combination) Two lithium atoms in a molecule.. (inorganic compound) The diatomic molecule Li2 found in the gas phase.. A fictional crystalline mineral in the Star Trek franchise, described as an essential component of anti-matter energy generation systems. |