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| II. | General Characteristics and Form |
The hieroglyphic system used in ancient Egypt had between 700 and 800 basic symbols, called glyphs. This number grew in the last centuries of ancient Egyptian civilization, because of an increased interest in writing religious texts. Egyptians wrote hieroglyphs in long lines from right to left, and from top to bottom. They did not use spaces or punctuation.
Egyptian glyphs are divided into two groups: phonograms, which are glyphs that represent sounds, and ideograms, which are glyphs that represent objects or ideas. The Egyptians constructed words by using a combination of the two types of glyphs. Readers must generally use both phonograms and ideograms to determine the significance of a word or phrase.
Phonograms represented the sounds of single consonants and combinations of consonants. A phonogram that represents the two consonant sounds s (on the right) and r (on the left) is:

The Egyptians did not write vowels, so it is impossible to know exactly how they pronounced hieroglyphic texts. When speaking, they may have expressed vowel sounds to distinguish various words that, in writing, look identical.
Ideograms could represent either the specific object written or something closely related to it. For example, the hieroglyphic symbol of a pair of legs might represent the noun movement. When combined with other glyphs, the symbol could represent the verb to approach, or the concept to give directions.

The Egyptians usually constructed their hieroglyphs by putting phonograms at the beginning of a word, followed by an ideogram, which is called a determinative when used in this fashion. The determinative specified the category to which the word belonged, such as motion words or animal words, and clued the reader in on the intended meaning. Following are several examples of hieroglyphs with the sounds s and r that combine phonograms and determinatives:

When speaking, the Egyptians might have differentiated between these words by adding vowel sounds—for example, by saying sor, ser, or sur. Because they did not write vowels, however, they used the determinatives that appeared to the left of the phonograms to specify each word’s meaning. Writing phonograms and determinatives in different combinations enabled the Egyptians to develop thousands of words without having to create a single distinct glyph for each thing, action, or concept.