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The Collaborative International Dictionary
diploid

diploid \dip"loid\ (d[i^]p"loid), n. [Gr. diplo`os twofold + -oid.]

  1. (Crystallog.) A solid bounded by twenty-four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron.

  2. (Biol.) a cell or organism having a number of chromosomes corresponding to two copies of each chromosome; a diploid cell or organism.

    A: I'm not interested in diploids. B: Oh, how I wish your parents had felt the same way!

diploid

diploid \dip"loid\ (d[i^]p"loid), a. [Gr. diplo`os twofold + -oid.] (Biol.) having a number of chromosomes corresponding to two copies of each chromosome; having double the basic number of chromosomes, as seen in a haploid cell. Contrasted to haploid and polyploid.

Note: in diploid cells, although the number of chromosomes is double that in haploid cells, it is not always true that there are two copies of every chromosome, since the two sex chromosomes in males will differ from each other. In females, and for other chromosomes, however, there are generally two copies of each, giving rise to the classical hereditary and sorting patterns of Mendelian genetics.

Douglas Harper's Etymology Dictionary
diploid

1908, from Greek diploos "double, twofold," (from di- "two" + root *pel- "to fold;" see ply (v.)) + eidos "form" (see -oid).

Wiktionary
diploid

Etymology 2 a. 1 (context cytology English) Of a cell, having a pair of each type of chromosome, one of the pair being derived from the ovum and the other from the spermatozoon. Most somatic cells of higher organisms are diploid. 2 (context crystallography English) Of a certain symmetry class with 24 congruent irregular quadrilateral faces. n. 1 A cell which is diploid. 2 An organism with diploid cells.

WordNet
diploid
  1. adj. of a cell or organism having two sets of chromosomes or twice the haploid number; "diploid somatic cells" [ant: polyploid, haploid]

  2. n. (genetics) an organism or cell having two sets of chromosomes or twice the haploid number

Usage examples of "diploid".

With the codon writer, we will make a diploid set of chromosomes combining deoxyribonucleic acid from both of you.

It was, of course, the existence of the haploid Flenni generation, which made the diploid Esthaans so healthy-each time the pairs of Esthaan chromosome broke apart to form a Flenn individual, every sort of recessive defect emerged without an allele to temper it.

Our plan was to insert a diploid nucleus from one of my primary spermatocytes into a human ovum and, in turn, insert that ovum into the uterus of a human female.

Your natural haploid set of chromosomes would be vacuumed out of it, and a doctor would add in a full diploid set of chromosomes created using the codon writer.

He was looking for clues to truth or falsity of the allegation that they were “mirror twins”—complementary diploids having the same mother and father.

He was looking for clues to truth or falsity of the allegation that they were "mirror twins"-complementary diploids having the same mother and father.

Her collections, The Diploids and The Trouble with You Earth People, are filled with gems but now hard to find.

Her stories have been widely anthologized and eight of them appeared in a collection, The Diploids and Other Flights of Fancy (1962).

But the steps necessary to achieve exact diploid complements would be these: There must be intervention in gametogenesis in each parent just before meiotic division-reduction of chromosome number-that is, one would start with primary spermatocytes and primary oocytes, unreduced diploids.

But the steps necessary to achieve exact diploid complements would be these: There must be intervention in gametogenesis in each parent just before meiotic division-reduction of chromosome number—.

Diploid plants, with ten chromosomes, would be succeeded by polyploids with twenty or thirty or even forty chromosomes.