companion
101companion cell — a Sertoli or follicle cell enveloping the cysts of spermatogenic cells in the testis …
102companion cell — Relatively small plant cell, with little or no vacuole, found adjacent to a phloem sieve tube and originating with the latter from a common mother cell. Thought to be involved in translocation of sugars in and out of the sieve tube …
103Companion of Honour — n (pl Companions of Honour) any of the 65 members of a British order of chivalry which was started by King George V in 1917. This honour is given to men and women who have performed a special service of national importance, often in politics or… …
104companion cell — Bot. any of a number of specialized parenchymal cells adjacent to a sieve tube in the phloem of flowering plants, believed to regulate the flow of nutrients through the tube. [1885 90] * * * …
105companion ladder — Naut. an inboard ladder or stair, as in a companionway. [1820 30] * * * …
106companion piece — a literary or musical work that has a close relationship to another work by the same author or composer. [1835 45] * * * …
107companion star — Astron. companion1 (def. 6). [1775 85] * * * …
108companion ladder — noun Either of two ladders leading from the raised quarterdeck of a sailing ship to the upper deck …
109companion animal — noun A pet …
110companion in arms — comrade in arms, fellow soldier …