en·do·sym·bi·ont 
(ĕn′dō-sĭmbē-ŏnt′, -bī-)
(ĕn′dō-sĭmbē-ŏnt′, -bī-)n.
An organism living inside another organism in an endosymbiotic relationship.
- look
- look after
- look a gift horse in the mouth
- look-alike
- lookalike
- look alive
- look alive/sharp
- look daggers at
- lookdown
- look down nose at
- look down nose on
- look down on
- look down one's nose at
- look down (one's) nose at/on
- look down one's nose on
- look down on/upon
- look down upon
- looker
- looker-on
- look for
- look forward to
- look-in
- looking glass
- look in on
- look into