A radical change in thinking from an accepted point of view to a new one, necessitated when new scientific discoveries produce anomalies in the current paradigm.

Of, related to, or suffering from paranoia / Exhibiting extreme and irrational fear or distrust of others

Someone suffering from paranoia

(derogatory) A person who lives on other people's efforts or expense and gives little or nothing back. / (derogatory) A sycophant or hanger-on.

(idiomatic) A state of happiness due to illusion or false hope.

A theory according to which society is based on conflict and change arising from inequality.

(pathology) is described as a free-floating mass, located inside blood vessels that can travel from one site in the blood stream to another. An embolus can be made up of solid (like a blood clot), liquid (like amniotic fluid), or gas (like air).

(geometry) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length.

(geometry) The conic section formed by the intersection of a cone with a plane parallel to a tangent plane to the cone; the locus of points equidistant from a fixed point (the focus) and line (the directrix).

The obsolete name for a psychotic disorder, now called delusional disorder, often (in one of 6 subtypes) characterized by delusions of persecution and perceived threat against the individual affected with the disorder, and often associated with false accusations and general mistrust of others