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
Metastasis is the medical term for cancer that spreads to a different part of the body from where it started. When this happens, doctors say the cancer has âmetastasized.â Other names for metastasis are âmetastatic cancerâ and âstage 4 cancer.â Sometimes the term âadvanced cancerâ also describes metastatic disease, but this isnât always true. For instance, âlocally advancedâ cancer is not the same as metastatic cancer. It describes cancer that has spread to nearby tissues or lymph nodes but not throughout the body.