| reflectance |
the ratio of the amount of radiation, esp. light, that is reflected from a surface to that of the radiation originally on the surface. |
| reflecting telescope |
an optical telescope that uses mirrors rather than lenses to focus light rays. (Cf. refracting telescope.) |
| reflection |
the act of reflecting or state of being reflected. [4 definitions] |
| reflective |
created by or resulting from reflection. [2 definitions] |
| reflector |
a surface that throws back heat, light, or sound. [2 definitions] |
| reflex |
denoting or pertaining to an involuntary physiological response or reaction to a stimulus. [7 definitions] |
| reflex camera |
a camera fitted with a mirror behind the lens which reflects the image onto a ground glass plate to achieve an exact focus. |
| reflexive |
of a pronoun, used as an object that refers back to the subject of a sentence, as "himself" in "He admired himself in the mirror". [4 definitions] |
| refloat |
combined form of float. |
| refluent |
flowing back, as in a tide; ebbing. |
| reforest |
to plant new trees in (an area formerly forested). |
| reform |
the improvement of wrong or bad conditions, esp. by political means. [5 definitions] |
| re-form |
to gather or form again. |
| reformable |
combined form of reform. |
| reformat |
combined form of format. |
| reformation |
the act of reforming or condition of being reformed. [2 definitions] |
| reformatory |
intended to improve or reform. [2 definitions] |
| reformed |
purged of faults, abuses, and errors. [3 definitions] |
| reformer |
a person who works to bring about reform or improvement; reformist. [2 definitions] |
| reformist |
a person supporting or advocating reform. [2 definitions] |
| reform school |
see reformatory. |