A spirit that takes possession of a psychic or medium and allows other spirits to communicate with the living.
A duplicate book, register, or account, kept to correct or check another account or register.
An interface element that a computer user interacts with, such as a window or a text box (abbreviated Ctrl).
Influence or authority over something.
A control group or control experiment.
A checkpoint along an audax route.
A means of monitoring for, and triggering intervention in, activities that are not going according to plan.
The method and means of governing the performance of any apparatus, machine or system, such as a lever, handle or button.
Restraint or ability to contain one's movements or emotions, or self-control.
A security mechanism, policy, or procedure that can counter system attack, reduce risks, and resolve vulnerabilities; a safeguard or countermeasure.
A construction in which the understood subject of a given predicate is determined by an expression in context. See control.
Any of the physical factors determining the climate of a place, such as latitude, distribution of land and water, altitude, exposure, prevailing winds, permanent high- or low-barometric-pressure areas, ocean currents, mountain barriers, soil, and vegetation.
(construed with for) To design (an experiment) so that the effects of one or more variables are reduced or eliminated.
to hold in check, to curb, to restrain
To exercise influence over; to suggest or dictate the behavior of.
A spirit believed to speak through a medium.
Someone who guides, especially someone hired to show people around a place or an institution and offer information and explanation, or to lead them through dangerous terrain.
A grooved director for a probe or knife in surgery.
A sign that guides people; guidepost.
A blade or channel for directing the flow of water to the buckets in a water wheel.
A member of a group marching in formation who sets the pattern of movement or alignment for the rest.
A document or book that offers information or instruction; guidebook.
Any marking or object that catches the eye to provide quick reference.
to serve as a guide for someone or something; to lead or direct in a way; to conduct in a course or path.
to act as a guide.
to exert control or influence over someone or something.
to supervise the education or training of someone.
to steer or navigate, especially a ship or as a pilot.