plural of 48

(Palestine, Israel, slang) An Arab resident of Israel.

(physics) A naturally-occurring radioactive isotope of calcium, ⁴⁸₂₀Ca, having twenty protons and twenty-eight neutrons, and a half-life of 4.3x10¹⁹ years

(physics) The major stable isotope of titanium, ⁴⁸₂₂Ti, having twenty-two protons and twenty-six neutrons; it amounts to about 74% of the element in nature

(US, geography) The contiguous continental states area of the United States of America, comprising 48 states in number, and the District of Columbia, excluding Alaska and Hawaii.

(US, geography) the contiguous continental states area of the United States of America, comprising 48 states in number, and the District of Columbia, excluding Alaska and Hawaii.

(computing, networking) an obsolete EUI used to address hardware interfaces within existing IEEE 802-based networking applications

(computing, networking) an EUI currently used for IEEE 802-based networking and is also used to identify other devices and software