The first Linnean order of Mammalia, composed of the four genera Homo, Simia, Lemur, and Vespertilio, or man, monkeys, lemurs, and bats.

Now, the first or highest order of Mammalia, including man, monkeys, and lemurs.

noun plural. The highest order of mammals. It includes man, together with the apes and monkeys. Cf. pitheci.

noun. Plural form of primate.

noun. an animal order including lemurs and tarsiers and monkeys and apes and human beings

"As one might expect, primates without color vision tend to have furry faces and hands and thus less need to perceive skin color; ­primates with color vision are more “naked” in this respect, humans most of all."