1. A line connecting points on the earth's surface having the same mean summer temperature

Derived forms: isotheres

• nasality
• nasalization
• nasalize
• nasally
• nascence
• nascency
• nascent
• NASDAQ
• Naseby
• Nash
• Nash equilibrium
• Nashville
• nasion
• nasofrontal
• nasofrontal vein
• nasogastric feeding
• nasolacrimal duct
• nasopharyngeal
• nasopharyngeal leishmaniasis
• nasopharynx
• nasotracheal tube
• Nassau
• Nasser
• Nast
• nastic