that's life

:  the person, thing, or idea indicated, mentioned, or understood from the situation

:  the time, action, or event specified

:  the kind or thing specified as follows

: used as a function word to introduce a noun clause that is usually the subject or object of a verb or a predicate nominative

: used as a function word to introduce a subordinate clause that is anticipated by the expletive it occurring as subject of the verb

: used as a function word to introduce a subordinate clause that is joined as complement to a noun or adjective

:  being the person, thing, or idea specified, mentioned, or understood

:  so great a :  such

:  the farther away or less immediately under observation or discussion

: used as a function word to introduce a restrictive relative clause and to serve as a substitute within that clause for the substantive modified by the clause

:  at which :  in which :  on which :  by which :  with which :  to which

:  that which

:  to such an extent

:  very, extremely

:  the quality that distinguishes a vital and functional being from a dead body

:  a principle or force that is considered to underlie the distinctive quality of animate beings

:  an organismic state characterized by capacity for metabolism (see metabolism 1), growth, reaction to stimuli, and reproduction

:  of or relating to animate being

:  lifelong

:  using a living model