Scientists do have to define what they mean when the use a word to represent something. For instance they have to define whether a particle is pointlike or spread out in order to determine its properties and to do accurate calculations.
You have to link your jargon to the real world, or else it may be wholly abstract. And as for calculations, throwing in fudge factors for missing data can blow up in a scientist’s face, figuratively speaking.
Scientists do have to define what they mean when the use a word to represent something. For instance they have to define whether a particle is pointlike or spread out in order to determine its properties and to do accurate calculations