nat·u·ral·ism 
(năchər-ə-lĭz′əm, năchrə-)
(năchər-ə-lĭz′əm, năchrə-)n.
1. Factual or realistic representation, especially:
a. The practice of describing precisely the actual circumstances of human life in literature.
b. The practice of reproducing subjects as precisely as possible in the visual arts.
2.
a. A movement or school advocating such precise representation.
b. The principles and methods of such a movement or of its adherents.
3. Philosophy The system of thought holding that all phenomena can be explained in terms of natural causes and laws.
4. Theology The doctrine that all religious truths are derived from nature and natural causes and not from revelation.
5. Conduct or thought prompted by natural desires or instincts.
- synchronal
- synchronic
- synchronically
- synchronicity
- synchronism
- synchronistic
- synchronistical
- synchronistically
- synchronization
- synchronize
- synchronized swimming
- synchronizer
- synchronous
- synchronously
- synchronous motor
- synchronousness
- synchronous orbit
- synchronous rotation
- synchrony
- synchrotron
- synchrotron radiation
- synclinal
- syncline
- syncopal
- syncopate