home / medterms medical dictionary a-z list / ortho- (prefix) definition Medical Definition of Ortho- (prefix) Ortho- (prefix): Prefix meaning straight or erect. From the Greek orthos that means just that: straight or erect. Examples of terms involving ortho- include orthodontics (straightening the teeth), orthopaedics (straightening the child), orthopnea (breathing easily only in an upright position), orthostatic (an upright posture), etc.
Yellow. âKnockoutâ roses also come in yellow, and this color is often used to contrast with red and pink roses. The vibrant yellow is also attractive to butterflies and birds and is particularly attractive to bees.he âRainbow Knockoutâ rose (Rosa x âRadcorâ) grows in USDA zones 5 through 10 and features two colors within the same flower. The outside of the flat-form flower features a bright pink color, but the petals turn bright yellow near the center. 1  Dig This.
The red rose was the favorite flower of Venus, the Roman goddess of love. Red roses are considered the flower of love because the color red stands for strong romantic feelings. 189 million stems of roses are sold in the U.S. on Valentine's Day. California produces 60 percent of American roses, but the greater number sold on Valentine's Day in the U.S. are imported, mostly from South America. Approximately 110 million roses, mostly red, will be sold and delivered within the three-day Valentine's Day time period. Greeting Cards Approximately 145 million valentines are sent in the U.S. each year according to estimates by the U.S. Greeting Card Association.