Practice Essentials. Chronic lymphocytic leukemia (chronic lymphoid leukemia, CLL) is a monoclonal disorder characterized by a progressive accumulation of functionally incompetent lymphocytes (see the image below). It is the most common form of leukemia found in adults in Western countries.
â¢ OIL PAINTING (noun) The noun OIL PAINTING has 2 senses: 1. a picture painted with oil paints. 2. the art or method of painting with oil paints. Familiarity information: OIL PAINTING used as a noun is rare.
Archive. Crude oil otherwise known as petroleum (from Greek: petra (rock) + Latin: oleum (oil)) is a composition of hydrocarbons (chemicals composed solely of hydrogen and carbon in various molecular arrangements) and other compounds which is usually brown or black in color.edium o i l is defined as having an API gravity between 22.3 Â°API and 31.1 Â°API. Heavy oi l is defined as having an API gravity below 22.3 Â°API. Classifications are made based on the sulfur content as well. Crude oil with low content of sulfur means 'sweet' and the presence of high content sulfur is known as 'sour'.