zygo-, zyg-, -zygous; zygomatico- +

(Greek: yoke, forming pairs; joined, union; or indicating a relationship to a junction; meaning a yoke or crossbar by which two draft animals; such as, oxen could be hitched to a plow or wagon)

zygomorphism, zygomorphy (s) (noun) (no pl)
The characteristic of an organism in which its parts are divisible lengthwise into similar or symmetrical halves: Zygomorphism is the state of symmetrical bilateralism in which both sides mirror each other to a great extent.
zygomorphous (adjective) (not comparable)
Pertaining to a living thing that is symmetrically bilateral: Zygomorphous organisms, or parts of organisms, are capable of division into two balanced halves in only in a single plane, and this capability is specifically applied to flowers.
zygomycosis (s) (noun), zygomycoses (pl)
A dangerous infection caused by a water-borne fungus: Zygomycosis is seen most often in patients who are already ill with diseases that cause wasting, such as AIDS or poorly controlled diabetes.

If unchecked, zygomycosis can spread to the lungs and other organs, the blood, the eyes, and the brain. Treatment is two-fold: controlling the underlying condition and attacking the infection with anti-fungal medications.

zygon (s) (noun), zyga; zygons (pl)
The short crossbar connecting the branches of a zygal fissure or gap which is a figure formed by two nearly parallel cerebral fissus (long narrow openings) connected by a short fissure (groove) at right angles, forming an H: Jenny could feel the zygon as part of the zumal fissure in her newborn baby.
zygoneure (s) (noun), zygoneures (pl)
A nerve cell which interconnects with other neurons: Rebecca wanted to become a doctor so she prepared herself for the following course by learning more about zygneures in the human body.
zygophyllaceous (adjective) (not comparable)
Regarding flowering plants that have pinnate leaves (a central stem with parts branching off it like feathers) and capsules as fruits: Jane had some zygophyllaceous shrubs in her garden, like bean-capers and caltrops.
zygophyte (s) (noun), zygophytes (pl)
A plant in which reproduction is done by the union of two similar reproductive cells which unite in fertilization: The alga organism is one example of a zygophyte and reproduces itself by the way of zygospores.
zygopodium (s) (noun), zygopodia (pl:
The distal intermediate segment of the limb of the skeleton which are the radius and ulna (two of the large bones of the forearm), tibia (shinbone) and fibula (outer and thinner of the two bones of the human leg between the knee and the ankle): After Lynn broke her arm, she read all about the zygopodium and could see exactly where the broken parts were.
zygose (adjective), more zygose, most zygose
Pertaining to the union or conjugation of two gametes, which are mature sexual reproductive cells, such as sperms or eggs, that unite with other cells to form new organisms: In her botany class at college, Judy learned all about zygose processes and what conditions were necessary for plant propagation.
zygosis (s) (noun), zygotes (pl)
A form of sexual reproduction in unicellular organisms; conjugation: Zygosis is the union of two cells and a fusion of their nuclei to form a new organism, for example in algae and fungi.
zygospore (s) (noun), zygospores (pl)
A large multinucleate plant spore formed by union with similar gametes: Such zygospores are produced by nonflowering vegetation, fungi, some bacteria, and algae.
zygostyle (s) (noun), zygostyles (pl)
The most inferior coccygeal vertebra or the small tail-like bone at the bottom of the human spine: The zygostyle is near the anus of a person and consists of 3-5 (or an average of 4) rudimentary vertebrae or the thirty-three bony segments that form the spinal column.
zygotaxis (s) (noun), zygotaxes (pl)
The mutual attraction between male and female gametes: The shared affinity betwixt or between two suspensors which is instantly responsible for sexual union or conjugation.
zygote (s) (noun), zygotes (pl)
The cell formed by the union of a male sex cell (a sperm) and a female sex cell (an ovum): The zygote develops into the embryo following the instruction encoded in its genetic material, the DNA.

The unification of a sperm and an ovum to form a zygote constitutes fertilization.

zygotic (adjective) (not comparable)
A reference to an organism which develops from a zygote or a single cell (fertilized ovum): Dr. Smith told Melanie, that after the zygotic stage of development took place, she should really know if she was really pregnant after a few weeks at the latest.