21-letter words containing c, h, i, l, a, g
- physically challenged — See example at challenged (def 1).
- polygenic inheritance — the heredity of complex characters that are determined by a large number of genes, each one usually having a relatively small effect.
- psychological primary — one of a set of perceived colours (red, yellow, blue, green, black, and white) that can be used to characterize all other perceived colours
- psychological warfare — the use of propaganda, threats, and other psychological techniques to mislead, intimidate, demoralize, or otherwise influence the thinking or behavior of an opponent.
- reconnaissance flight — a flight made by an aircraft in order to obtain military information about a particular place
- replacement algorithm — The method used to determine which entry in an associative cache to flush to main memory when it is desired to cache a new block of data. The "least recently used" algorithm flushed the block which has not been accessed for the longest time. A random replacement algorithm picks any block with equal probability.
- schlieren photography — a type of photography which records schlieren
- secure hash algorithm —
- social anthropologist — an anthropologist who deals with cultural and social phenomena such as kinship systems or beliefs, esp of nonliterate peoples
- the rock of gibraltar — a limestone promontory at the tip of S Spain
- threshold wage policy — a policy whereby wages are increased in accordance with inflation
- undesirable discharge — a discharge under other than honorable conditions of a person from military service by administrative action.
- vertically challenged — short in stature.