nau·ti·cal (nô'tĭ-kəl) adj. Of, relating to, or characteristic of ships, shipping, sailors, or navigation on a body of water.
[From Latin nauticus, from Greek nautikos, from nautēs, sailor, from naus, ship; see nāu- in Indo-European roots.] nau'ti·cal·ly adv.
Synonyms: These adjectives mean of or relating to the sea, ships, shipping, sailors, or navigation: nautical charts; marine insurance; maritime law; a naval officer.
1552, from M.Fr. nautique, from L. nauticus "pertaining to ships or sailors," from Gk. nautikos, from nautes "sailor," from naus "ship," from PIE *nau- "boat" (see naval).