gram-, -gram-, -gram, -grammatic, -grammatical, -grammatically, -gramme, -grammic +

(Greek: write, writing, something written, a written record, a recording; letters; words; later, a small weight, a unit of mass in the metric system)

A unit of weight in the metric system from 1797 gramme, borrowing of French gramme, from Late Latin gramma, "small weight"; from Greek gramma, "small weight"; originally, "something written"; from the stem of graphein, "to draw, to write".

—Compiled from information located in;
The Barnhart Dictionary of Etymology; Robert K. Barnhart, Editor;
The H.W. Wilson Company; New York; 1988; page 445.
brontogram
The record made by a brontometer or brontograph (an instrument for recording the phenomena associated with thunderstorms).
cablegram
A message sent by submarine telegraph cable.
calorigram
A record of caloric intake in graphic form.
capnogram (s) (noun), capnograms (pl)
A continuous record of the carbon dioxide content of a person's expired air.
cardiogram
1. A tracing made by a electrocardiograph or cardiograph (an instrument that registers the motions of the heart by tracing a curve on paper, etc.).
2. Generally used for any recording derived from the heart, with such prefixes as apex-, echo-, electro-, phono-, or vector- being understood.
cartogram
A type of single-topic map which is not made with a constant scale, in which features are deliberately distorted to show their relative value to one another in terms of that single topic; for example, a map in which states, or countries, are made large or small according to their agricultural production.
cartogramic
A reference to a map showing geographically, by shades or curves, statistics of various kinds; related to a statistical map.
centigram
A metric unit of mass equal to one hundredth of a gram. Symbol cg.
centimeter-gram-second system, CGS system
A system of measurement based on fundamental units of a centimeter for length, a gram for mass, and a second for time.

Introduced by the British Association for the Advancement of Science in 1874, it was the system commonly used in science for many years, until eventually replaced with the MKS system (meter-kilogram-second system) and then the International System of Units (SI).

cephalogram
A cephalometric radiograph.
ceraunogram, keraunogram (s) (noun); ceraunograms, keraunograms (pl)
A written record that results from a radio direction-finder for the study of atmospherics; especially, from a meteorological point of view: One example of a ceraunogram is the written recording of the occurrences of distant lightning flashes.
cholangiogram
A radiographic procedure where a contrast dye is injected into the bile duct to visualize its course on X-ray.

Used in the detection of gallstones which block the common bile duct.

cholecystogram
A radiograph of the gallbladder.
chromatogram
1. The graphic record produced by chromatography or the presentation of differential movements through a two-phase system.
2. The recording (column or paper strip) on which the constituents of a mixture are adsorbed in chromatography.
chromogram
A combination of three photographs taken by a special process, which when superposed produce an image in the natural colors of the object.

Related "writing" word units: glypto-; graph-; scrib-, script-.