a. [ Pref. bi- + nucleolus. ] (Biol.) Having two nucleoli. [ 1913 Webster ]

n. a queen of Egypt; b. 69 b. c., d. 30 b. c. [ WordNet 1.5 ]

[ So named after Cleopatra, queen of Egypt. ] Either of two obelisks which were moved in ancient times from Heliopolis to Alexandria, one of which is now on the Thames Embankment in London, and the other in Central Park, in the City of New York.

☞ Some writers consider that only the obelisk now in Central Park is properly called Cleopatra's needle. [ Webster 1913 Suppl. ]

n. an organic molecule consisting of a hereocyclic base attached to the 1-carbon of a deoxyribose ring, with a phosphate group esterified at the 5 position of the deoxyribose. Deoxyribonuceotides are the monomer units which make up deoxyribonucleic acid, the molecule carrying the hereditary information in most organisms. The most common forms of deoxyribonuceotide are thymidine-5′-phosphate (abbreviated TMP), deoxyadenosine-5′-phosphate (abbreviated dAMP), deoxyguanosine-5′-phosphate (abbreviated dGMP), and deoxycytidine-5′-phosphate (abbreviated dCMP). [ PJC ]

n. (Eccl. Hist.) A follower of Heracleon of Alexandria, a Judaizing Gnostic, in the early history of the Christian church. [ 1913 Webster ]

a. (Zool.) Belonging to the Nucleobranchiata. -- n. One of the Nucleobranchiata. [ 1913 Webster ]

‖n. pl. [ NL. See Nucleus, and Branchia ] (Zool.) See Heteropoda. [ 1913 Webster ]

‖n. [ NL. See Nucleus, and Idioplasma. ] (Biol.) Hyaline plasma contained in the nucleus of vegetable cells. [ 1913 Webster ]

a. (Biol.) Of or pertaining to the nucleolus of a cell. [ 1913 Webster ]

a. Having a nucleole, or second inner nucleus. [ 1913 Webster ]

n. [ See Nucleolus. ] The nucleus within a nucleus; nucleolus. [ 1913 Webster ]

n.; pl. Nucleoli [ L., a little nut, dim. of nucleus. ] 1. A little nucleus. [ 1913 Webster ]

2. (Biol.) A small rounded body contained in the nucleus of a cell or a protozoan. [ 1913 Webster ]

☞ It was termed by Agassiz the entoblast. In the protozoa, where it may be situated on one side of the nucleus, it is sometimes called the endoplastule, and is supposed to be concerned in the male part of the reproductive process. See Nucleus. [ 1913 Webster ]

n. (Physics) A neutron or proton, when contained within an atomic nucleus. [ PJC ]

n. The sum of the number of neutrons and protons in an atomic nucleus. Syn. -- mass number. [ WordNet 1.5 +PJC ]

n. [ Nucleus + -plasm. ] (Biol.) The matter composing the nucleus of a cell; the protoplasm of the nucleus; karyoplasma. [ 1913 Webster ]

a. (Biol.) Of or pertaining to nucleoplasm; -- esp. applied to a body formed in the developing ovum from the plasma of the nucleus of the germinal vesicle. [ 1913 Webster ]

n. (Biochem.) A type of molecule found in all living organisms, present mostly in chemically combined form as a component of nucleic acids, and also in smaller amounts in free form, consisting of a pentose sugar bound to a purine or pyrimidine base; two types of nucleoside, ribonucleoside and deoxyribonucleoside, are present. The most common bases present in nucleosides are adenine, cytosine, uracil, guanine, and thymine, and to a lesser extent hypoxanthine and other bases are found. The most commmon ribonucleosides composed from these bases are called adenosine, cytidine, uridine, and guanosine. The forms esterified with orthophosphoric at the 5-position of the pentose are called nucleotides. The nucleotides form the monomer units which are combined into DNA and RNA, which carry the genetic information required for reproduction in all known organisms. [ PJC ]

n. a phosphate ester of a nucleoside; one of the monomeric components of DNA or RNA. [ WordNet 1.5 +PJC ]

n. [ Octa- + nucleotide. ] (Chem.) A molecule composed of eight nucleotide units bound to each other by phosphodiester bonds in a linear array; as, a partial digest of DNA or RNA may include octanucleotides. See octamer. [ PJC ]

a. [ Poly- + nucleolar. ] (Biol.) Having more than one nucleolus. [ 1913 Webster ]