noun, Physics, Chemistry. 1. a succession of elements initiated in the radioactive decay of a parent, as thorium or uranium, each of which decays into the next until a stable element, usually lead, is produced. Also called decay series.
Report Abuse. Healing times for cartilage is 3-6 months. However, a lot of people say it takes closer to a year for the piercing to heal properly and feel truly stable.t can take a year for deep cartilage piercings. won't be sore for that long, but it may be that long until it's fully healed and you can sleep on it. Source(s): i have several.
For a navel piercing it may take 3 months to a year (sometimes a  little longer) to completely heal. My navel only took 2 months for  mine to heal. I was told it would take â¦ 4-6 months by the place I  had it done. However, according to professionals, it can take up to  a year to heal completely.ost cartilage piercings take 6 months-1 year to completely heal. You'll be able to change the jewelry after about 2 months. It also depends on where it is exactly and if you' â¦ re wearing a rings or stud.