| Babbling (psycho.): A stage of child language acquisition and it occurs usually from the third to the sixth month. | بأبأة |
| Baby-talk (psycho.): A way of talking used by adults to communicate with children. | لغة الأطفال |
| Back-formation (ling.): In etymology, back-formation refers to the process of creating a new lexeme (less precisely, a new "word") by removing actual or supposed affixes. The resulting neologism is called a back-formation. | اشتقاق عكسي |
| Back-translation (comm.): The translation that occurs after the original translation. | ترجمة عكسية |
| Base (gramm.): The original part of the word after removing all the affixations. | أساس |
| Base form (gramm.): The word in its source and infinite form. | صيغة الأساس |
| Base morpheme (gramm.): same as the base form. | مورفيم الأساس |
| Basic consonants (phon.): Consonants that are shared among most languages. For example, plosives and nasals. | صوامت أساسية |
| Batch (poet.): An old synonym for stanza. | مقطع |
| Bidialectalism (socio.): The ability to use two accents of the same language. | ثنائية اللهجة |
| Bidirectional dictionary (comm.): A dictionary that is used in both ways and sides. | معجم متبادل |
| Bilabial (phon.): A phone produced by the closure or partial closure of both lips. | شفتاني |
| Bilingual (comm.): A person who can speak two languages. | ثنائي اللغة |
| Bilingual dictionary (comm.): A bilingual dictionary or translation dictionary is a specialized dictionary used to translate words or phrases from one language to another. | معجم ثنائي اللغة |
| Bilingualism (comm. /socio.): The ability to use and speak two languages. | ثنائية اللغة |
| Binarism (ling.): A method used in linguistic analysis which aims to divide linguistic elements into opposite couples. | شطرية |
| Biological linguistics (ling.): A branch of linguistics that deals with the necessary biological factors in order to develop the use of language. | علم اللغة الأحيائي |
| Black English (socio.): The English that is used by the black people in the united states of America. | إنجليزية الزنوج |
| Blade (of the tongue) (physio.): The front tip of the human tongue. | طرف اللسان |
| Blend (gramm.): A word that is comprised from blending two different words. | مزيج |
| Blockable syllable (phon.): A syllable that ends with a consonant. | مقطغ مغلق |
| Body semantics (semio.): Body language. | إيمائية |
| Book word (comm.): A very formal word and only used in writing. | كلمة فصيحة |
| Borrowed element (ling.): A linguistics element that is borrowed from another language. | عنصر مقترض |
| Borrowing (ling.): The intrusion of other elements to the language. | اقتراض |
| Bound morpheme (gramm.): It is the morpheme that is always should be bound with the word to give its intended meaning. | مورفيم مقيد |
| Braille (comm.): A communication system for reading used by the blinds. | طريقة برايل |
| Breath stream (phon.): The air stream that occurs when speaking. | تيار التنفس |
| Broken plural (gramm.): A kind of plural that is only found in certain languages. | جمع التكسير |
| Buccal cavity (physio.): The oral (mouth) cavity. | تجويف فموي |
| Bundle (phon.): A group of characteristics that describes a vowel. | حزمة |
| Burst (phon.): The second phase of speaking any plosive sound. | اندفاع |
