A Quick and Simple Dictionary

capitalise

1. Verb.  (''followed by'' '''on''') To seize, as an opportunity; to obtain a benefit.
2. Verb.  (context, writing) to make use of capital letters (a.k.a. ''upper case'').
3. Verb.  (business) to have, contribute or acquire capital (money or other resources) for a business.
4. Verb.  (finance) to convert into capital, ie to get cash or similar immediately fungible resources for some less fungible property or source of future income.
5. Verb.  (context, accounting) to treat as capital, not as an expense. (This has implications for when deductions may be taken, at least under US law.).
6. Verb.  (intransitive) : To profit or to obtain an advantage.