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ape, any primate of the superfamily Hominoidea, which includes humans; this article, however, focuses on the nonhuman apes. The small apes, the gibbons and the siamang, and the orangutans, which belong to the great apes, are found in SE Asia. The other great apes, the gorillas and the chimpanzee and closely related bonobo are found in Africa. The term ape was formerly and incorrectly applied to certain tailless monkeys. Ape and anthropoid ape are now used synonymously, although the common names of certain monkeys still contain the word ape; for example, the N African macaque is called the Barbary ape.

True apes vary in size from the 3–ft (90–cm), 15–lb (6.8–kg) gibbon to the 6–ft (1.8–m), 450–lb (200–kg) gorilla. All apes are forest dwellers and most spend at least some of the time in trees. Except for adult gorillas, they can run along branches on all fours; they are also able to move about by brachiation, or arm-over-arm swinging. Gibbons (including siamangs) are particularly adept at this type of locomotion; the heavier orangutans prefer to grasp a neighboring tree and pull itself across to it. Gorillas and chimpanzees are the most terrestrial of the apes, normally traveling on all fours by leaning on the knuckles of their forelimbs with the fingers of their hands curled under (knuckle-walking); orangutans ball their fingers into fists during the short periods they walk. Most apes are able to walk on two feet for short distances.

The skeleton of an ape is quite similar to that of a human in the structure of the chest and shoulders. Apes have broad, flat chests and arms capable of reaching up and backward from the shoulder; this construction is associated with brachiation. The pelvis, on the other hand, is more like that of a monkey, designed for walking on all fours, hence the use of knuckle-walking for ground locomotion. The arms of an ape are longer than the legs. The hands are similar to human hands, but with fingers and thumb of more equal length; the feet are handlike, grasping structures. Apes have neither tails nor the cheek pouches found in Old World monkeys; gibbons are the only apes that have the buttock callosities found in Old World monkeys. Like other anthropoid primates, the eyes are highly developed, with stereoscopic color vision. The brains of great apes are different from Old World monkeys and some structures are reminiscent of the uniquely elaborate features of the human cortex, rendering these primates capable of fairly advanced reasoning. Chimpanzees, bonobos, orangutans, and gorillas have been observed using objects as tools in the wild.

Estimates of the amount of identical genetic material (DNA) in chimpanzees and humans range from 94.6% to 99.4%. This marked similarity, and additional evidence, have led primatologists to suggest that the taxonomy of the apes should include two families: Hylobatidae (gibbons and siamangs) and Hominidae (orangutans, gorillas, and chimpanzees and humans). Apes are classified in the phylum Chordata, subphylum Vertebrata, class Mammalia, order Primates.


See S. Montgomery, Walking with the Great Apes (1991).

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a city in Aluksne Raion, Latvian SSR, located 177 km northeast of Riga, near the border of the Estonian SSR. Ape has a railroad station on the narrow-gauge Valga-Gulbene line. Population, 2,600 (1968). Industry consists of woodworking and food-processing. Ape arose in the second half of the 19th century and received the status of a city in 1928.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

What does it mean when you dream about an ape?

As our closest animal relatives, apes can represent the natural, instinctual wisdom that most of us have lost, particularly if the dream animal is a gray-haired ape. We also sometimes associate simians (especially chimpanzees) with humor, and with the “chained up” animal self inside (e.g., King Kong). “Ape” can also mean to mimic.

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.


(vertebrate zoology)
Any of the tailless primates of the families Hylobatidae and Pongidae in the same superfamily as humans.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


1. any of various primates, esp those of the family Pongidae (see anthropoid ape), in which the tail is very short or absent
2. any monkey
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


(audio, compression)
A lossless audio compression algorithm from MonkeysAudio.


A graphics package from the Ohio Supercomputer Centre.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)


The file extension of a Monkey's Audio music file. See Monkey's Audio.
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References in periodicals archive ?
aper reached first maturity at 6.69 cm TL and 1.84 years from their growth rate.
For Tacitus, most of the other participants to the dialogue seem to be examples to follow: Aper's realism and passion, Mesalla's nobility and nostalgia for the past, Secundus' perspicacity and the sense for nuances.
Number of Linear functions Quadratic functions predictors LOER([dagger]) APER LOER([dagger]) APER 3 75.4 75.4 72.1 78.7 2 75.4 75.4 67.2 68.9 1 72.1 72.1 72.1 72.1 14 75.4 82.0 54.1 95.1 Estimate of actual error rate from cross-validation using the leave-one-out method.
Train aper, e as with all of "Roy was the joker the bunch, but didn't drink, didn't smoke, and could drive to Formula 1 standard.
So I air of skys ys ys y crap ap aper wedge ge g s an a d have found myself shopping for flats - not a position I've been in much (probably why I'm in this predicament) - and I'm finding it very hard to get excited.
Like everything else my bills have been going up and up and when the latest increase on gas and electricity were about to kick in, I decided it was time to try and find a cheaper aper tariff," ," ffad adds ds Alan an who semi-r mi-retir etired ed and runs a bedr edroo oo manufac f turing business.
A spokesman for the newsps aper said information had come from a freelance journalist who had spoken to a "source".
(From a financial institution's interim report) "4.7.9A E Conduct of the following type falls within APER 4.7.2E: An approved person with responsibility for a firm's compliance with TC ('A') failing to implement a system requiring A's prior approval before any other approved person ('B') within that firm carries out an activity within a controlled function different to the activity that B carried out within that controlled function immediately prior to the proposed change."
The winners have got a Bill, the losers have got a draft Bill, the real losers have got their proposals `taken forward', the completely defeated have got a consultation p aper.
He regretted that the State had continued to witness retrogression due to the failure of past leaders who refused to build on the legacy of Aper Aku and Moses Adasu administration.
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