(Greek: time, times; sequence of times)
2. Interference with the regularity of periodic movement; such as, the heart beat. 3. An orientation response due to age; used particularly with reference to the movement of leaves in plants.
2. The science of tree-ring analysis and its implications.
3. In archaeology, a method of dating wooden objects by analyzing the pattern of their annual rings and comparing this pattern to an established tree-ring sequence for the region.
2. In medicine, systematically observed over time in the same subjects throughout as opposed to synchronic or cross-sectional; the inferences are equivalent only where there is strict stability of all elements.
3. Pertaining to or designating a method of linguistic study concerned with the historical development of a language; historical, as opposed to descriptive or synchronic.
4. In archaeology, denoting actions or things which occur over time, as in the study of artifacts in a region as they change across sequential periods of time.
2. The existence within a single geologic formation of regions of rock that were laid down at different times; for example, by a sea that gradually covered a landmass.
3. In botany, having two periods of growth in the year.
2. Describing a lithological unit whose age varies from place to place, or a lithological unit (rock formation) which cuts across various times or biostratigraphic zones.
3. A geological deposit in which a sedimentary rock formation apparently consists of similar material, but varies in age from place to place.
For example, as a shoreline advances or retreats, a succession of continuous deposits representing different environments; such as, beach, shallow water, and deeper water, may be left behind as their ages vary depending on the positions of the shorelines through the various time sequences.
This leads to disturbances of biological rhythms.
2. A synchronous machine used to convert alternating current (AC) to direct current (DC), or the reverse.
The AC-to-DC converter has been replaced by a mercury arc rectifier (for reasons of efficiency, lower maintenance costs, and fewer problems) or by motor-generator sets.