To obtain instantaneous dehydration, use is made in practice of a stream of hot gas-generally air-the temperature of which ranges between 400 and 1000 C., and a quantity of alumina, of the order of 20 to 150 gr. per cubic meter of hot gas, is continuously dropped therein.
Neoplasm is an abnormal growth of tissue, which if it forms a mass, is commonly referred to as a tumor. This abnormal growth (neoplasia) usually but not always forms a mass. ICD-10 classifies neoplasms into four main groups: benign neoplasms, in situ neoplasms, malignant neoplasms, and neoplasms of uncertain or unknown behavior.
He used the Greek term  oncos  to refer to a growth or a tumour that looked malignant. Only few new terms were introduced to refer to these growths and tumours. At the beginning of the 19th century carcinoma became a synonym of cancer and the ending  -oma  was used to designate some cancerous lesions.