Latin is the root of all Romance languages. However, despite being the precursor to languages such as French, Spanish, Portuguese and Italian, use of Latin other than in the Roman Catholic Church and Vatican City is quickly diminishing. In fact, yourDictionary lists Latin on its "extinct and endangered" languages list.
The Latin language itself is split into two vernaculars. One is considered Classical Latin, which is the literary form and most often used today. The other is the Vulgar form, which was spoken by Roman soldiers and the people whose lands they conquered. Most Romantic languages came from the Vulgar form of Latin. (Source: http://www.bartleby.com/65/la/Latinlan.html)
Learning Latin can be difficult, as it is not emphasized in most schools. Using an online free dictionary can be of great help when trying to comprehend the ancient language.

Beyond learning the language for school or in a university setting, knowing Latin can increase knowledge of a person's native tongue language. Many words used today have Latin roots, suffixes, or prefixes.
To find Latin resources recommended by yourDictionary, select "Language" from the list of dictionaries at the top of the homepage. From the Languages page, choose "Latin." A number of resources under the "Romance Languages" category are given. Choose from any of those listed, including:
Using a translation dictionary to get words in English or a Latin dictionary to look up words in the language to find their meaning is extremely helpful for students of the Romance language. Try these additional free Latin online dictionaries to get the information you need:
An online dictionary can only be useful if you remember where it is found. Be sure to bookmark the free Latin dictionaries you rely on the most. Whether you need a definition in Latin for a Latin word, or need an English definition or translation, there is sure to be a dictionary online to meet your needs.