Those bits of wood that come with a canvas are called canvas keys, and are for ensuring the canvas remains tight. Photo Â© Marion Boddy-Evans.Licensed to About.com, Inc.f youâve bought an unprimed ready-made canvas, or are stretching your own, donât use keys until after youâve primed the canvas, as priming makes the it more rigid. Some canvases are made with rigid corners, without the option of hammering in a wedge or key.
meâ¢tasâ¢taâ¢sis. a. the spread of disease-producing organisms or of malignant or cancerous cells to other parts of the body by way of the blood or lymphatic vessels or membranous surfaces. b. the condition produced by this. metastasis metÃ¡stasis a. Changing see -, meta ]. stasis
The metastatic tumor is the same type of cancer as the primary tumor. For example, if prostate cancer spreads to the bone, the cancer cells in the bone are actually prostate cancer cells. The disease is metastatic prostate cancer, not bone cancer.he metastatic tumor is the same type of cancer as the primary tumor. For example, if prostate cancer spreads to the bone, the cancer cells in the bone are actually prostate cancer cells. The disease is metastatic prostate cancer, not bone cancer.