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.
LINK / CITE ADD TO WORD LIST. adjective. The definition of isolated is a person who is alone and who has minimal contact with others, or a place that is remote and far away from other people.1  An example of isolated is an old hermit. 2  An example of isolated is a cabin deep in the woods.djective. The definition of isolated is a person who is alone and who has minimal contact with others, or a place that is remote and far away from other people.