Lines, real or implied, which direct a viewer's attention to a focal point in a visual text.

Matrices with either one row or one column.

have direction and magnitude. Quantitatively, their mathematical presentation requires a number of scalar components equal to the dimensionality of the coordinate system. In general, a vector is a uni [..]

Directions given by a controller to pilots to position them for an approach or to avoid other aircraft. The directions include the direction in which pilots should turn (left or right) and the new com [..]

Members of the class Arachnida, especially Spiders; Scorpions; Mites; and Ticks; which transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.

Arthropods, other than Insects and Arachnids, which transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.

DNA molecules capable of autonomous replication within a host Cell and into which other DNA sequences can be inserted and thus amplified. Many are derived from Plasmids; Bacteriophages; or Viruses. Th [..]

Invertebrates or non-Human Vertebrates which transmit infective organisms from one host to another.

Insects that transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.

">Vector charts; a type of electronic chart.

 – Rodents, flies, mosquitoes or other organisms capable of transporting disease.

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Directions of fire spread as related to rate of spread calculations (in degrees from upslope). 

Directions of fire spread as related to rate of spread calculations (in degrees from upslope).