Wordnet 3.0
ADVERB (2)
1.
straight up or down without a break;
[syn: sheer, perpendicularly]
2. in a perpendicular manner;
- Example: "this red line runs perpendicularly to the green line"
The Collaborative International Dictionary of English v.0.48:
Perpendicularly \Per`pen*dic"u*lar*ly\, adv.
In a perpendicular manner; vertically.
[1913 Webster]
WordNet (r) 3.0 (2006):
perpendicularly
adv 1: straight up or down without a break [syn: sheer,
perpendicularly]
2: in a perpendicular manner; "this red line runs
perpendicularly to the green line"