interequinoctial

equinoctial

[ee-kwuh-nok-shuhl, ek-wuh-]
adjective
1.
pertaining to an equinox or the equinoxes, or to the equality of day and night.
2.
pertaining to the celestial equator.
3.
occurring at or about the time of an equinox.
4.
Botany. (of a flower) opening regularly at a certain hour.

Origin:
1350–1400; Middle English < Latin aequinoctiālis pertaining to the equinox. See equinox, -al1

interequinoctial, adjective
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World English Dictionary
equinoctial (ˌiːkwɪˈnɒkʃəl)
 
adj
1.  relating to or occurring at either or both equinoxes
2.  (of a plant) having flowers that open and close at specific regular times
3.  astronomy of or relating to the celestial equator
 
n
4.  a storm or gale at or near an equinox
5.  another name for celestial equator
 
[C14: from Latin aequinoctiālis concerning the equinox]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
equinoctial   (ē'kwə-nŏk'shəl, ěk'wə-)  Pronunciation Key 
Adjective  
  1. Relating to an equinox.

  2. Relating to the celestial equator.


Noun   See celestial equator.
The American Heritage® Science Dictionary
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