I. de‧pen‧dence /dɪˈpendəns/ (also dependency) noun [uncountable]
[Word Family: noun: dependant, dependence ≠ independence, dependency; adverb: dependably, independently; adjective: dependable, dependent ≠ independent; verb: depend]

1. when you depend on the help and support of someone or something else in order to exist or be successful Antonym : independence
dependence on/upon
our dependence on oil as a source of energy
the financial dependency of some women on men

2. drug/alcohol dependence when someone is addicted to drugs or alcohol

3. technical when one thing is strongly affected by another thing
dependence of
the mutual dependence of profit and growth

[TahlilGaran] Dictionary of Contemporary English ▲

II. de‧pen‧den‧cy /dɪˈpendənsi/ noun (plural dependencies)
[Word Family: noun: dependant, dependence ≠ independence, dependency; adverb: dependably, independently; adjective: dependable, dependent ≠ independent; verb: depend]

1. [uncountable] dependence:
drug dependency

2. [countable] a country that is controlled by another country ⇒ colony:
Britain’s Caribbean dependencies

[TahlilGaran] Dictionary of Contemporary English ▲