extremely+valuable
51navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …
52plasmid — /plaz mid/, n. Microbiol. a segment of DNA independent of the chromosomes and capable of replication, occurring in bacteria and yeast: used in recombinant DNA procedures to transfer genetic material from one cell to another. [1950 55; PLASM +… …
53Kamo Chomei — born 1155, Japan died July 24, 1216, Kyōto Japanese poet and critic. He is best known for An Account of My Hut (1212), a poetic diary describing his life in seclusion written after he left a court office to take Buddhist orders and become a… …
54Polish Literature — • Of the literature of Poland before the advent of Christianity (965) very few traces indeed are extant . . . Catholic Encyclopedia. Kevin Knight. 2006. Polish Literature Polish Literature …
55Alexandre Alexeieff — Born April 18, 1901(1901 04 18) Kazan, Russia Died August 9, 1982(1982 08 09) (aged 81) Paris, France Nationality French Ethnicity …
56Matchbox (brand) — For other uses, see Matchbox (disambiguation). Matchbox Type Die cast toy Owner Mattel, Inc Country Origin Lesney, England Current U.S …
57worth — 1 preposition 1 be worth to have a value in money: How much is the ring worth? | be worth 10/$500 etc: The picture is worth about two thousand pounds. | be worth a lot informal (=be worth a lot of money) | be worth nothing/not be worth anything:… …
58Big Eddy Site — The Big Eddy Site (23CE426) is an archaeological site located in the southwestern portion of the U.S. state of Missouri, which was first excavated in 1997 and is now threatened due to erosion from the Sac River. Location and General… …
59Swarming (military) — Swarming is a behavior in which autonomous, or semi autonomous, units of action attack an enemy from several different directions and then regroup. Pulsing , where the units shift the point of attack, is a necessary part of swarming. Swarming is… …
60sports — /spawrts, spohrts/, adj. 1. of or pertaining to a sport or sports, esp. of the open air or athletic kind: a sports festival. 2. (of garments, equipment, etc.) suitable for use in open air sports, or for outdoor or informal use. [1910 15; SPORT +… …
