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.
Main Difference â Absent vs Absence. Absent and absence are two related words that have similar meanings. The difference between absent and absence stems not from the meaning, but from the grammatical category: absent is an adjective whereas absence is a noun. Therefore, these two words have different grammatical features. This is the main difference between absent and absence. Absent â Meaning and Usage