Semidiurnal
adjective
1.
pertaining to, consisting of, or accomplished in half a day.
2.
occurring every 12 hours or twice each day.
adjective
1.
of or continuing during half a day
2.
occurring every 12 hours
Read Also:
- Semidivine  adjective 1. somewhat more than mortal but less than divine. 
- Semidome  noun 1. half a dome, especially as formed by a vertical section, as over a semicircular apse. noun 1. a half-dome, esp one used to cover a semicircular apse 
- Semidomesticated  [sem-ee-duh-mes-ti-key-tid, sem-ahy-] /ˌsɛm i dəˈmɛs tɪˌkeɪ tɪd, ˌsɛm aɪ-/ adjective 1. living in a state of partial domestication. 
- Semantic web  noun 1. a proposed development of the World Wide Web in which computers can interpret and act on natural language 
- Semi-dominance  [sem-ee-dom-uh-nuh ns, sem-ahy-] /ˌsɛm iˈdɒm ə nəns, ˌsɛm aɪ-/ noun, Genetics. 1. incomplete dominance. 
