atrial fibrillation; auricular fibrillation
accumulation; retention; collection; sequestration (as in carbon dioxide sequestration); storage (usually a liquid, e.g. rainwater, or behind a dam.)
arowana (any fish of subfamily Osteoglossinae); bonytongue
polyethylene terephthalate; PET; positron emission tomography; PET
mapo tofu (spicy Sichuan dish of tofu and minced meat)
Rubik's Cube; Erno Rubik's Magic Cube
tweezers (esp. in a medical or laboratory setting); forceps
coincidence; conformity; anastomosis; inosculation
highest level; high-water mark
heart attack; angina pectoris
fierce look; frightening look; tough look; aggressive attitude; coercive attitude; taking a hard line
change in the law; legal reform
complete cure; radical cure; complete recovery
how many months?; how long?
concurrence; coincidence; complication (in illness)
to defy; to disobey; to rebel against; to oppose; to resist
to be used to eating; to become used to eating; to be accustomed to eating; to acquire a taste for
sharp increase; sudden rise
doctor's rounds (in hospital)
vital; lively; energetic; vital signs
one's speciality; one's forte; one's strong point
under ... years of age; less than ... years old