Rigor is something strict, severe or demanding. 1  Harsh and strict treatment in the military for cadets is an example of rigor. 2  Freezing weather and ice are examples of the rigors of winter.  Difficult and challenging academic courses are an example of academic rigor.
The suffix gram means to draw or write. This is used in telegram.
Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Gram(adj) angry. 2  Gram(noun) the East Indian name of the chick-pea (Cicer arietinum) and its seeds; also, other similar seeds there used for food. 3  Gram(noun) alt. of Gramme.