What is the meaning of the word "condition"?

Definitions:

(usually plural) a statement of what is required as part of an agreement noun
- the contract set out the conditions of the lease
a mode of being or form of existence of a person or thing noun
- the human condition
a state at a particular time noun
- a condition (or state) of disrepair
an illness, disease, or other medical problem noun
- a heart condition
to apply conditioner to in order to make smooth and shiny verb
- I condition my hair after washing it
to put into a better state verb
- I condition old cars.