Pentachromat is a related term of pentachromacy.

As nouns the difference between pentachromat and pentachromacy

is that pentachromat is one whose vision exhibits pentachromacy; one who can distinguish five primary colors while pentachromacy is the quality of having five independent channels for conveying color information in the eye.

As nouns the difference between sectarianism and postsectarian

is that sectarianism is rigid adherence to a particular sect, party or denomination while postsectarian is an adherent of postsectarian philosophy.

As an adjective postsectarian is

after or beyond sects or sectarianism, especially as a reaction to sectarianism.

As nouns the difference between entertain and divertissement

is that entertain is (obsolete) ; pleasure while divertissement is an entertaining diversion.

As a verb entertain

is to amuse (someone); to engage the attention of agreeably.

As nouns the difference between diversion and divertissement

is that diversion is a tactic used to draw attention away from the real threat or action while divertissement is an entertaining diversion.

As nouns the difference between ballet and divertissement

is that ballet is a classical form of dance while divertissement is an entertaining diversion.

As a noun tortoise

is any of various land-dwelling reptiles, of family testudinidae , whose body is enclosed in a shell (carapace plus plastron) the animal can withdraw its head and four legs partially into the shell, providing some protection from predators.

As an adjective testudinal is

of, or relating to, tortoises.

Testudinarious is a synonym of testudinal.

As adjectives the difference between testudinarious and testudinal

is that testudinarious is (zoology) resembling or pertaining to the shell of a tortoise while testudinal is of, or relating to, tortoises.

As nouns the difference between tunicate and tethydan

is that tunicate is any of very many chordate marine animals, of the subphylum tunicata'' or ''urochordata , including the sea squirts while tethydan is (obsolete) tunicate (mollusk).

As an adjective tunicate

is of or pertaining to these animals.

As a proper noun branch

is .

As an adjective tetrachotomous is

dividing or branching into four equal pieces.

As a numeral four

is (cardinal) a numerical value equal to ; the number after three and before five; two plus two this many dots (••••).

As a noun four

is (countable) the digit or figure 4; an occurrence thereof.

As an adjective tetrachotomous is

dividing or branching into four equal pieces.