1. (adjective) belonging to a thing by its very nature

• intrinsical

1. (adjective) situated within or belonging solely to the organ or body part on which it acts

• anatomy
• general anatomy

1. (adjective) belonging to a thing by its very nature

• built-in
• constitutional
• inbuilt
• inherent
• integral
• inner
• internal
• intimate

2. (adjective) situated within or belonging solely to the organ or body part on which it acts

• internal

1. (adjective) belonging to a thing by its very nature

• essential
• inalienable
• unalienable

1. (adjective) belonging to a thing by its very nature

• extrinsic