(inorganic chemistry) The unstable oxyanion O=N-O-O⁻, a structural isomer of the nitrate anion; it exhibits cis-trans isomerism

simple past tense and past participle of reclang

The time when light first appears in the morning; dawn, especially the start of dawn. / (astronomy) The first use of a telescope or other instrument to capture an astronomical image.

In a poorly-ventilated and close manner. / In a boring and pompous manner. / (US) In an angry and obstinate manner.