What is 'geographic information system' in French?

"Système d'information géographique" is a French equivalent of "geographic information system."

The French Word "système" is a masculine noun. Its singular definite article is "le" ("the"), and its singular indefinite article "un" ("a, one"). The preposition "de"* means "of, from." The feminine noun "information" takes "l" as its singular definite article, and "une" as its singular indefinite article. The Word "géographique" may modify singular masculine and feminine nouns.

All together, the pronunciation is "see-stehm deh-fohr-mah-syoh zheh-oh-grah-feek."

*The preposition "de" temporarily drops the vowel "e" before Words that begins with vowels. The temporary nature of the drop is indicated by an apostrophe.

The feminine singular definite article actually is "la." But the vowel "a" drops before a noun that begins with a vowel. The temporary nature of that drop is indicated by an apostrophe.