Caves, or caverns, are among the most fragile ecosystems on the planet and are impacted by human activity and environmental degradation. There are approximately 17,000 caves in the United States, according to the US Geological Survey. Caverns are found throughout the United States, except in Rhode Island and Louisiana. Caves range from single, small rooms to interconnecting passageways that extend outward for miles. Among the largest caverns in the United States are Mammoth Cave, Jewel Cave, Wind Cave and Lechuguilla Cave.
paterfamilias. 1  the male head of a household or family, usually the father. 2  Roman Law. the head of the Roman family; a juridical entity who holds the patria potestas. a person who is not under the patria potestas of another.
â¢ ROME (noun). The noun ROME has 2 senses: 1. capital and largest city of Italy; on the Tiber; seat of the Roman Catholic Church; formerly the capital of the Roman Republic and the Roman Empire. 2. the leadership of the Roman Catholic Church. Familiarity information: ROME used as a noun is rare.Dictionary entry details.. capital and largest city of Italy; on the Tiber; seat of the Roman Catholic Church; formerly the capital of the Roman Republic and the Roman Empire.