WordReference Random House Learner's Dictionary of American English © 2015
in•dis•pen•sa•ble /ˌɪndɪˈspɛnsəbəl/USA pronunciation adj. 

    necessary or essential:A computer is indispensable to many writers.
in•dis•pen•sa•bil•i•ty /ˌɪndɪˌspɛnsəˈbɪlɪti/USA pronunciationn. [uncountable]
in•dis•pen•sa•bly, adv. See -pend-.

Collins Concise English Dictionary © HarperCollins Publishers::

indispensable /ˌɪndɪˈspɛnsəbəl/ adj
  1. absolutely necessary; essential
  2. not to be disregarded or escaped: an indispensable role
  1. an indispensable person or thing

ˌindisˌpensaˈbility, ˌindisˈpensableness n ˌindisˈpensably adv

'indispensable' also found in these entries:

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