Atoms of the same element that have different masses are called isotopes. Different masses result when there are different numbers of neutrons. All atoms of a particular element have the same number...
Definition of absent. 1 : not present at a usual or expected place : missing was absent from class today sharing memories of absent friends She was conspicously absent [=her absence was very noticeable] at the meeting. absently. adverb He replied absently to her question. Examples of absent in a sentence.
Find out What is the Definition, Meaning and Explanation of Absence, What Does Absence Mean. 1. the fact of being away from a place She did not explain her absence from the meeting. The former president was sentenced in his absence. in the absence of because someone is not there In the absence of the chairman, his deputy took the chair. 2.