[ad. mod.L. teuthologia, irreg. (for *teuthidologia) f. Gr. τευθίς (-ιδο-ς) cuttle-fish, squid + -LOGY.] That branch of zoology which deals with cephalopods. Hence Teuthologist.

1

1886.  Hoyle in Challenger Rep., XVI. 61. More explicit information … would be very acceptable to teuthologists.

2

1891.  Cent. Dict., Teuthology.

3