|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a unit consisting of the living parts of a cell, including the protoplasm and cell membrane but not the vacuoles or (in plants) the cell wall|
|[C16: from Late Latin prōtoplastus the first-formed, from Greek prōtoplastos, from |
protoplast pro·to·plast (prō'tə-plāst')
The living material of a plant or bacterial cell, including the protoplasm and plasma membrane after the cell wall has been removed.
One that is the first made or formed; a prototype.