Words Starting With Cy: List, Examples, and Questions

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1. Cyclone- A large-scale, atmospheric wind-and-pressure system.
2. Cynic- A person who believes people are motivated purely by self-interest.
3. Cylinder- A solid geometric figure with straight parallel sides and a circular or oval cross-section.
4. Cyberspace- The virtual environment of computers and the internet.
5. Cycad- A palm-like plant of tropical and subtropical regions.
6. Cyclist- A person who rides a bicycle.
7. Cymbal- A percussion instrument consisting of a concave brass disk.
8. Cytoplasm- The material within a living cell, excluding the nucleus.
9. Cyborg- A fictional or hypothetical person whose physical abilities are extended beyond normal human limitations by mechanical elements built into the body.
10. Cypress- A type of coniferous tree.
11. Cyclist- A person who rides a bicycle.
12. Cypher- A secret or disguised way of writing; a code.
13. Cynosure- A person or thing that is the center of attention or admiration.
14. Cyclamen- A small Mediterranean plant with decorative leaves and flowers.
15. Cyano- A prefix relating to the color blue.
16. Cyclopedia- Another term for encyclopedia.
17. Cynicism- An inclination to believe that people are motivated purely by self-interest.
18. Cyphertext- Text processed into an unreadable form using a cipher.
19. Cycloid- A curve generated by a point on the circumference of a circle rolling along a straight line.
20. Cytology- The study of cells.
21. Cysteine- A sulfur-containing amino acid.
22. Cyst- A closed sac with a distinct membrane developed abnormally in a cavity or structure of the body.
23. Cylinderhead- The end cover of a cylinder in an engine, fixed in the cylinder bore, often containing part of the combustion chamber.
24. Cyanide- A highly toxic chemical compound.
25. Cybernetic- Pertaining to cybernetics, the science of communications and automatic control systems.
26. Cytokine- A broad category of small proteins important in cell signaling.
27. Cycadophyta- A division of gymnosperms, including the cycads.
28. Cyclometer- An instrument for measuring circular arcs.
29. Cyanite- A generally blue silicate mineral.
30. Cygnus- A northern constellation (the Swan), lying on the plane of the Milky Way.
31. Cynophobia- A fear of dogs.
32. Cyanotype- A photographic printing process that produces a cyan-blue print.
33. Cytokinesis- The process by which the cytoplasm of a cell divides.
34. Cyclonic- Related to or resembling a cyclone.
35. Cyanosis- A bluish discoloration of the skin due to lack of oxygen in the blood.
36. Cyprin- A term relating to the Cyprinidae or carp family of fish.
37. Cytogenetics- The field of genetics that involves the study of the structure and function of the cell, especially the chromosomes.
38. Cyclohexane- A colorless, flammable liquid with a distinctive detergent-like odor, with a chemical formula of C6H12.
39. Cybersickness- Symptoms of nausea and disorientation caused by exposure to virtual environments.
40. Cyathium- A cup-like structure that houses the flowers in the euphorbia plant.
41. Cytoskeleton- A microscopic network of protein filaments and tubules in the cytoplasm of many living cells.
42. Cymograph- An instrument for tracing the outlines of the curves of arches.
43. Cyclopropane- A colorless gas with a sweet smell, used as an anesthetic.
44. Cytopathology- The study of disease at the cellular level.
45. Cycloaddition- A chemical reaction that yields a cyclic product.
46. Cymotrichous- Refers to a hair type characteristic where the hair is wavy.
47. Cyclic- Occurring in cycles; regularly repeated.
48. Cytosol- The liquid found inside cells.
49. Cyclamate- An artificial sweetener.
50. Cyclogenesis- The development or strengthening of a cyclonic circulation in the atmosphere.
51. Cytometry- The measurement of cell characteristics.
52. Cymiology- The study of wave phenomena.
53. Cyanohydrin- Organic compounds having the formula R2C(OH)CN.
54. Cyclomorphosis- Any form of cyclical change in body form or structure, often in response to environmental change.
55. Cycloalkane- A type of hydrocarbon with a ring structure and only single bonds.
56. Cyanelle- A photosynthetic endosymbiont similar to a cyanobacterium.
57. Cycled- To move in or follow a regularly repeating sequence.
58. Cyme- A flower cluster with a central stem bearing a single terminal flower that develops first.
59. Cynophilist- A dog lover.
60. Cyclotron- A type of particle accelerator.
61. Cytidine- A nucleoside molecule formed when cytosine is attached to a ribose ring.
62. Cyanobacteria- A phylum of bacteria that obtain their energy through photosynthesis.
63. Cynergin- Organic compounds found in poisonous plants, especially nitrogenous substances.
64. Cyclops- A genus of small crustaceans; also a mythological giant with one eye in the middle of the forehead.
65. Cybersquatting- Registering, selling, or using a domain name with the intent of profiting from someone else’s trademark.
66. Cypsela- A dry single-seeded fruit formed from a double ovary, typical of the daisy family (Compositae).
67. Cyclopean- Of a type of ancient masonry made with massive irregular blocks.
68. Cyanotype- A photographic blueprint.
69. Cyclogenesis- The development or intensification of a cyclonic circulation.
70. Cyanosis- Bluish discoloration of the skin due to poor circulation or inadequate oxygenation of the blood.
71. Cyrtoceratite- Refers to a type of fossil cephalopod.
72. Cytoblast- The nucleus of a cell.
73. Cycloidal- Pertaining to a cycloid, a specific type of curve.
74. Cytoblastema- A formative substance believed to be the origin of cells.
75. Cycloidally- In a manner pertaining to or resembling a cycloid.
76. Cyanotype- Another term for a blueprint, especially used in copying architectural and mechanical drawings.
77. Cybotaxis- The tendency for molecules to arrange in an ordered way within an otherwise disordered phase.
78. Cypripedium- A genus of orchids, commonly known as lady’s-slipper orchids.
79. Cyclopentane- A chemical compound with the formula C5H10, consisting of a ring of five carbon atoms.
80. Cytochrome- Any of a number of compounds consisting of heme bonded to a protein.
81. Cyanuric- Relating to or derived from cyanuric acid, used in swimming pools to stabilize chlorine and reduce its loss.
82. Cyclopaedia- Another form of the word “encyclopedia.”
83. Cytophilic- Denoting cells that attract or adhere to one another.
84. Cyclamate- A synthetic sweetener banned in the U.S. due to concerns over potential carcinogenic properties.
85. Cyanophilous- Having an affinity for blue dyes.
86. Cytoarchitecture- The study of the cellular composition of the central nervous system’s tissues under the microscope.
87. Cyclosis- The movement of cytoplasm within a cell.
88. Cyntaxidrosis- Sweating that is induced by heat.
89. Cytology- The branch of biology concerned with the structure and function of plant and animal cells.
90. Cyclicean- Pertaining to reptiles of the class Cyclicina, now known as Tornieria, a genus of dinosaurs.
91. Cytochylema- The cytoplasm, excluding the organelles and cytoskeleton.
92. Cyanogenic- Capable of producing cyanide, often used in describing certain plants.
93. Cyclitidae- A family of ancient bivalve mollusks.
94. Cytolysis- The destruction or dissolution of cells.
95. Cymbalist- A person who plays the cymbals.
96. Cyanophenol- A compound used in the production of various industrial chemicals.
97. Cycloid- A geometric curve traced by a point on the circumference of a circle rolled along a straight line.
98. Cystoscopy- A procedure used to see inside the urinary bladder and urethra.
99. Cytherian- Pertaining to the Greek island Cythera or the goddess Venus.
100. Cytoactive- A substance that stimulates cellular activity.