| echoic |
like an echo. [2 definitions] |
| echolalia |
the uncontrollable repetition of words spoken by another person, often associated with autism spectrum disorder or with other developmental or mental disorders. |
| echolocation |
the process by which animals such as bats locate objects by emitting sounds and hearing them echoed. [2 definitions] |
| echo sounding |
a method of determining the depth of a body of water by measuring the time the echo of an emitted sound wave takes to return from the bottom. |
| éclair |
an oblong pastry filled with whipped cream or custard and usu. frosted with chocolate. |
| éclat |
brilliance of performance or achievement. [3 definitions] |
| eclectic |
drawing on or influenced by various styles, disciplines, systems or the like. [3 definitions] |
| eclecticism |
an eclectic method or system, or the practicing or advocating of such. |
| eclipse |
at a particular observation point, the blocking of light from one celestial body by another, such as the eclipse of the sun by the interposition of the moon, or the eclipse of the moon by the earth's coming between the sun and moon. [6 definitions] |
| eclipsing binary |
two stars that orbit a common center of gravity and periodically move in front of each other, causing a fluctuating magnitude. |
| ecliptic |
the apparent path of the sun, as seen from the earth against the background stars. [3 definitions] |
| eclogue |
a poem, usu. in dialogue form, about the charms of country life. |
| eco- |
habitat; environment; household. |
| ecocide |
the destruction of the environment or of ecological systems by indiscriminate exploitation of natural resources, dumping of chemical wastes, the use of defoliants and pollutants, and the like. |
| eco-friendly |
designed to cause minimal damage to the environment. |
| E. coli |
a species of bacteria, present in the intestines of all vertebrates, that is widely used in biological research. |
| ecological |
of or pertaining to ecology. |
| ecology |
the scientific study of the relationships between living things and their environments. [2 definitions] |
| e-commerce |
the exchange of goods and services conducted on the Internet; electronic commerce. |
| econometrics |
(used with a sing. verb) the application of mathematical and statistical methods to research in economics. |
| economic |
of or pertaining to the production and distribution of goods, wealth, and services. [3 definitions] |