abac
/ˈeɪbak/Now rare
noun
A type of nomogram in which the required value is determined by use of a ruler or other straight edge.
Origin
Late 19th century; earliest use found in The Academy: a monthly record of literature, learning, science, and art. From classical Latin abacus abacus, after French abaque. Compare earlier abacus.
- opinion trade
- opinious
- opioid
- opiomania
- O. Pip
- opisometer
- opisthe
- opisthion
- opistho-
- opisthobranch
- Opisthobranchia
- opisthobranchiate
- opisthocoelian
- opisthocoelous
- opisthodome
- opisthodomos
- opisthodomus
- opisthodont
- opisthogastric
- opisthoglyph
- opisthoglyphic
- opisthoglyphous
- opisthognathous
- opisthograph
- opisthographic