XI

Pronunciation (US):

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IPA (US):

 Dictionary entry overview: What does XI mean? 

• XI (noun)
  The noun XI has 2 senses:

1. the cardinal number that is the sum of ten and one

2. the 14th letter of the Greek alphabet

  Familiarity information: XI used as a noun is rare.

• XI (adjective)
  The adjective XI has 1 sense:

1. being one more than ten

  Familiarity information: XI used as an adjective is very rare.

 Dictionary entry details 

• XI (noun)

Sense 1

Meaning:

The cardinal number that is the sum of ten and one

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

11; eleven; XI

Hypernyms ("XI" is a kind of...):

large integer (an integer equal to or greater than ten)

Sense 2

Meaning:

The 14th letter of the Greek alphabet

Classified under:

Nouns denoting communicative processes and contents

Hypernyms ("xi" is a kind of...):

alphabetic character; letter; letter of the alphabet (the conventional characters of the alphabet used to represent speech)

Holonyms ("xi" is a member of...):

Greek alphabet (the alphabet used by ancient Greeks)

• XI (adjective)

Sense 1

Meaning:

Being one more than ten

Synonyms:

11; eleven; xi

Similar:

cardinal (being or denoting a numerical quantity but not order)

 Context examples 

This allele, which encodes collagen alpha-1(XI) chain protein, plays a role in modulation of cartilage structure.

(COL11A1 wt Allele, NCI Thesaurus)

Collagen alpha-1(XI) chain (1806 aa, ~181 kDa) is encoded by the human COL11A1 gene.

(Collagen Alpha-1 (XI) Chain, NCI Thesaurus)

A genus of Gram positive, cocci shaped bacterium assigned to the phylum Firmicutes and the family Clostridiales XI.

(Helcococcus, NCI Thesaurus)

The complex binds to and irreversibly inactivates thrombin and other activated clotting factors IX, X, XI, and XII and prevents the transformation of fibrinogen to fibrin.

(Heparin Calcium, NCI Thesaurus)

A rare inherited bleeding disorder caused by deficiency of coagulation factor XI.

(Hereditary Factor XI Deficiency, NCI Thesaurus)

A genus of anaerobic, Gram positive, cocci shaped bacterium assigned to the phylum Firmicutes and the family Clostridiales XI.

(Finegoldia, NCI Thesaurus)

A genus of facultatively anaerobic, Gram positive, cocci shaped bacterium assigned to the phylum Firmicutes and the family Bacillales XI.

(Gemella, NCI Thesaurus)

A genus of strictly anaerobic, Gram positive, cocci shaped bacterium assigned to the phylum Firmicutes and the family Clostridiales XI.

(Anaerococcus, NCI Thesaurus)

Activated factor XII cleaves and actives factor XI and prekallikrein (PK).

(Intrinsic Prothrombin Activation Pathway, NCI Thesaurus/BIOCARTA)

Significant deficiency in factors II, V, VIII, IX, X, XI, XII or anticoagulants will prolong PTT.

(Partial Thromboplastin Time, NCI Thesaurus)